How do you choose between a studio and 1 bedroom apartment for assisted living?

My father has been living in a one bedroom assisted living for 5 years but is now doing rehab for walking. When we moved him to his first assisted living, he was walking and could use and enjoy the space. Now he's likely to be on a walker permanently. We're going to change his assisted living facility while he's in rehab and I'm trying to decide between a one bedroom or deluxe studio. Both would have room for a queen size bed, but there's a dramatic cost difference. He could afford both, but I'm not clear on the logic of why to choose one or another. I don't want to fail to give him nice things and make his life good, but I think having the one bedroom apartment was a temptation to SIT IN IT rather than getting out and enjoying the common areas and participating in activities. But how do I know if my dad will recover enough to do that? The place we're considering moving him to has many activities, even more than at his last place, and spacious common areas. Any advice on how to choose?