Out of curiousity, how often do you have guests stay? Once a year, less. more? Are they young and able to get off of a high quality air mattress? When you map out the room, be sure to map out the footprint of the bed when open and see how much walking space there will be. Also, consider where guests will put their belongings, where you will stash away your belongings when they are in the space, and where you will work when they are there.

When I visit my parents I stay in their office / guest room. I'm shocked I haven't sprained an ankle yet trying to navigate that room when the pull out sofa is open. I also have resorted to sleeping on a living room sofa and my husband sleeping on the office sofa because neither of us want to sleep on that uncomfortable pull out bed. It was great when they first bought it. Nice Ethan Allen. Then after two years, it just sucked!