Maybe you could do a built-in banquette to pull the table up to under the right side window (under the air conditioner/heater) and along the wall - or in the corner where the laundry is now. That way, cushions could be stored in the seats of the banquet along with a folding board to convert the banquet benches into a bed for visitors. It is an idea straight out of the motor home realm, but is a good way to hide a bed in a daytime room. If you have a leaf for the table, making it oblong, it can seat quite a few with the banquets and chairs combined.

Otherwise, there are a lot of murphy bed ideas out there. The LeeValley.com site sells the hardware and plans for DIY murphy beds. One becomes a desk in the daytime. Other sites will have ones that are held sideways and that are not so tall. Some also have desks.

fi you would do a simple sketch of the existing floor-plan it would be helpful.