I think I'd consider moving the couch closer to the window wall and angle towards the fireplace...perhaps with the heater behind it. Then add 2 armchairs so that it is facing the window. This will open up the space where the sofa is. I'd turn the table so that the chairs are on the left/right instead of up/down. I'd then take your storage and place it along that left wall so that it spans that little nook. Finally, where the sofa was, I'd place a small table. Nothing too heavy, just something simple...perhaps like one of those console tables that folks make out of hairpin legs and an old floor joist (etsy.com). I think then you'd have two identifiable spaces, that are connected via the decor you place on both the dining room storage, console table, and living room. Or I could be completely wrong :) good luck

The first thing I would do is turn the sofa through 90 degrees so it faces the window, moving it back slightly so you could enjoy the fire on cooler days. The coffee table would go in front of it. Space for an additional armchair would be created by getting rid of the plant by the radiator - if you wanted to keep it you could place it behind the television. I would also put a large, brightly coloured area rug to define the space and add interest. You could then put storage - a low cupboard, for example - against the back of the sofa, facing into the dining area. The dining table could stay where it is, as the space behind the table would be freed up.

I'm guessing that, as you're in Spain (lucky devils) you have hard flooring, either terracotta or dark wood. If so, you would do best with a light but warm colour, such as a soft yellow. If you wanted to add a 'feature wall', I would make it the wall behind the dining table, picking up a colour from your soft furnishings.

Good luck, from a cold, grey, rainy Oxford in the UK!

In addition to the comments above, I would get a four seating table that can be extended when you have guests so that the table is not as big and bulky on a daily basis. Also, the alcove to the right of the fireplace (not with the radiator) might be a nice nook for some built in shelving.

I am guessing that one of the two doors near the table leads to the garden? If so, and if it's not already, I'd replace it with a single French door with lots of glass to let in more light. (If there is any way to remodel to get another window, it might be worth investigating.)

As for making the space feel brighter and less crowded. all the usual suggestions probably apply: light colors, sleek furniture with visible legs and not much "over-stuffed" feel, no more furniture that you really need, something sparkly to attract attention, etc.

You probably have the sofa facing botht he TV and the fireplace in the most efficient position, unless you consider a small L-shaped sectional instead. If so, I'd use the corner of the sectional as a room divider, and face the window with it. Maybe add one smallish occasional chair near the radiator, angled to face the sofa to create a conversation area. If you have ottomans as your coffee table, you can increase the size of the party seating!!

I'd aim for a slim dining table, either rectangular or oval, and ideally not as much as 48 inches across, to save space. (36 inches might be perfect, but they are not easy to find.) If you want to seat 4-6, you could also go round with a leaf to add as needed.

For storage, maybe you can find or have custom built (it might be cheaper than you think!) a unit in the niche across from the doors. That would be more space saving than the big credenza or whatever it is shown in the plan, and leave more space to opne the door, too.

Assuming you want to stay with this furniture for a while... I would move the couch down towards the window and then add a chair across from the fireplace, angled towards the couch seating area. Place the buffet on the wall across from the fireplace/radiator, next to the chair. Rotate the table so that it's longways in the room. The little nook next to the table would now be a great place for some built in shelves/a cabinet.

If you can get rid of the buffet, I'd suggest just a console table on the wall next to the chair and dining storage in a built-in in the nook by the table.

I have three suggestions.

1.Turn the entire length of the wall (on the left side of the behind the couch) into built ins for books, display, and whatever you keep in the dining hutch. This creates one long wall making it easier for furniture placement.

2. Get rid of the dining hutch and put mirror(s) on that wall to bounce in natural light.

3. Get a round table for eating.

Would love to see some after pictures!

What does the round symbol shown twice in the empty floor plan mean, ceiling light fixtures?

It looks to me like all of your furniture is really crowded up towards the dining area, and there's a big waste of space at the sliding garden door on the other side of the room.

You sideboard next to your dining table looks like it really crowds things. I would look to replace it with something that could fit in the nook on the side.

Next, don't center the sofa on the wall, at least center it relative to the fireplace and light fixture, which would make your dining area more spacious. You could also turn the sofa 90º and put the sideboard behind it. Add chairs near the garden door to create a conversational grouping that still allows access to the door, and makes that area more useful.

As others have said, I'd get a smaller table, one that seats four and could be expanded for larger gatherings, and center it under the light fixture.

If the credenza is going to stay, I'd place it on the other side of the table, sort of as a room divider, and place the sofa against it, so that the sofa is facing the windows. You can then place table lamps on the credenza to use for reading light for those seated on the sofa.

I'd then put the television against the wall opposite the fireplace. Putting the TV so close to the windows might make it difficult to view the screen.

I'd love to see an actual photo of your living room, the architectural details look very interesting.

This might not work for the way you use the room, but I'd consider moving the table down to the window end of the room.

Then you could put the couch perpendicular to the fireplace, facing the back wall, and put the TV where the sideboard currently is. You'd have room to add another chair or two for extra seating. You could have the couch back far enough to also see the fire, or you could move the couch closer to the wall.

Then you could create three zones in the room. A seating area for TV viewing as you enter, a cosy reading area in front of the fireplace and a dining area near the windows.

Consider floating most of the furniture off the walls, and as a PP suggested, getting built-in storage along one wall.

To create a sense of light and airiness, you'll need to bring in more light, no matter how you arrange the furniture. Floor lamps, some table lamps. And things that will help bounce the light around the room. Mirrors are the obvious choice, but silver objects, glass objects and mirrored objects will also do the trick. Any shiny thing that glitters and sparkles will help.

Mirror against the back wall to reflect light. Sparkly objects. Lots of lighting in the ceiling. Candice Olson has a knack for bring light to the darkest spaces. Check out her rooms.
What's with that big empty space in front of the window? It looks like it needs something.

Ok, after more thot, here's what I've got:
1.) Dining area:Replace the rectangular table with a round one. It's easier to move around. Put the sideboard on hold for a moment but get it out of this space. Use the back wall for big mirror to reflect light from window on opposite side of room. Hang sparkly chandelier above table. Add wide shelf under mirror for buffet style serving (oprional).
2.) Fireplace area: Place two sofas, parallel to each other and perpendicular to the fireplace. Add coffee table between. Hang small crystal ball pendant light over coffee table. Add the sideboard from the dining room to the back of the nearest sofa. This serves as the dining room sideboard AND a console to the sofa now. Add lighting to the console. Move TV to where the sofa is now. Build up the media area with shelving. (optional: Hide TV behind art work, use more lighting here with sconces)
3.) Window area: place desk either beneath the window or behind nearest sofa. Beneath the window would reduce glare on laptop screen. OR put two chairs facing each other separated by a small table. Add bookshelves to the alcoves. Add lighting to the bookshelf area.

You could keep the dining bit light and breezy by stealing some of the ideas from the living/dining room of this house tour http://www.younghouselove.com/photo-gallery-2/our-first-house/

ps. here's a better post about that http://www.younghouselove.com/2009/06/adding-a-dining-area-to-your-living-room/

The lightfitting in the dining area wants to be centred over the table, so really the buffet needs to move. Here's what I'd do.

Move the buffet to where the sofa is, and shift the dining set more into the corner.

Move the sofa to where the plant is, and push the TV more into the nook.

Get a couple of small, groovy armchairs and put them in front of the buffet, facing the fire.

You now have a less crowded dining area, a space to watch TV, and a little sitting area to read a book in front of the fire. The small armchairs can be dragged toward the window if you have guests over and want to have more seats together.

1. Create three zones - a dining zone in the dark end, a TV zone in the bright end containing the couch and the TV, and a little sitting zone in the middle centred on the fireplace, with a couple of small armchairs.

2. Rotate the couch so that it faces the windows and is just "above" the fireplace. Move the buffet so that it backs onto the couch. Put a couple of armchairs opposite the couch.