This is what they are using on some boats, click here.
A large table in the center that has sides that fold down so when the table is not in use, you can walk by it.
Ideally the table would lower thereby making the larger couch section a double sleeper and the right side a single sleeper.
It seems to be a good idea rather than the diner and couch layout. Everyone would have a table to eat at.
What do you think? Good or bad idea?