May I introduce light and welcoming:
As for the practicality of a white sofa? There is no practicality but I love it! This is a room that will see little true living action and if it did, it's a sofa from Pottery Barn the has custom slipcovers available so if needed, I can cover it. I got it at the outlet and I'm calling it a WIN.
Sarah, you should really should come over. It's much more charming in person. ; )