a lot of good ideas in the files...
Flexible furniture can hold its own as arrangements change over time. These overlapping Laccio Side and Coffee Tables can be used as benches and tables in multiple configurations.
In a small space, two chairs can be more versatile than a large sofa. These are Knoll's Krefeld Lounge Chairs and Ottomans.
A round table with a stem base can sometimes create more seating than a rectangular table. These are the Sprite Chair with Cyclone Dining Table and Saarinen Dining Table with Tulip Armchairs.
Another example of a table that fits several seats - the Platner Dining Table with Bertoia Chairs.
The photo on the left of the Saarinen Womb Chair shows how built-in bookshelves along the wall create streamlined storage space. In the photo on the right of the D-Urso Table, casters make it easy to move the dining table. Using casters is an easy way to make furniture more flexible in a small space.
An oddly-shaped alcove is the perfect spot for a built-in office. The simplicity of the desk, file cabinet, cubby, and Saarinen Armchair keeps things looking clean. All photos are from Knoll Space, which can be accessed here.