I think its a little weird with the playroom (because then your kids come into your room) but when the day comes to sell, im sure you could reposition it as just an office and it would be appealing!

If this is the only way to do it- then I say go for it! The square footage will be worth it

I see spiral stairs as a major safety issue. My brother-in-law has them in his loft, and more than one person has come close to pitching over the side. I think kids would see it as a neato jungle gym to play on.

IMO, it'd be preferable to have the typical attic folding ladder to a bonus space - it's a safer climb and you can be in control of when they're extended or retracted.

I love spiral staircases! I grew up in several houses with spiral staircases; as a teenager I even had a salvaged one in my room leading up to my loft bed.
They really are the ultimate jungle gym. But we never had any accidents.
I would put it in a kid's room though - adventure for the kids and privacy for you.

Sorry, but I hate spiral staircases. I don't think its too great for resale.

Spiral staircases, to me, are just way cool looking but I've always thought it would be a nightmare trying to get furniture in a room with a spiral staircase.

You would have to purchase furnishings that you assemble in the room and then disassemble when you leave and sometimes, that is not easy. I've tried it; those locking screws are really tough to reverse.

Also, for the few places I've been in that have spiral staircases, they seem to get 'lose' after a while so they 'wiggle' when you walk up or down them.

Alot to think of for sure. The upside is that they are a great space saver however I do agree with J. ERIN. Use the pull down stair method. That may be saver and easier to install but still a bear to bring furniture up.

Good luck with your project and I hope all goes well.

...get loose after a while. Sorry for the type.

Jeez, sorry for the typo. I need my tea this morning.....

What about a built in stair case book shelf going up to the loft area? with a built in closet or more shelves underneath. I would make them really narrow so it doesn't take up alot of floor space. I would also consider adding the access to the children's bedroom above the staircase to built in bunk beds so they serve a double purpose.

Spiral stairs are nice to look at, but I don't know if future buyers would want them in their master. Plus, there's the furniture issue, and I often feel unsteady walking up & down spiral staircases myself.
A more sleek, modern staircase, as suggested by Allison12, sounds nice, especially if you incorporate storage. Buyers love storage!

Why not open up the whole attic space and have a ladder up to a mezzanine floor, that is: the roof will be visible in your room while the mezzanine will be over the other bedrooms.

From a resale standpoint, you need to stick with something a little more traditional. Most people don't have very active imaginations and when faced with something out of the norm they will walk away rather than problem-solve. Consider using the attic for a more private space, and creating access in a less used area of the upstairs, instead of the master bedroom. The master bedroom should be a retreat, not Grand Central. Good luck!