Older dog was neutered today. He is acting very confused. Where to put him to sleep?

My 8 year old adopted cocker spaniel was neutered today. He's partially blind and he usually sleeps in his doggy bed at the foot of my bed. Usually, I leave a night light on for a bit while he gets settled in and then he sleeps until the morning. Since he has the cone on, is drugged up and is partially blind, I'm nervous of putting him in my room just because there's things he can walk into. He was sleeping for the first couple of hours, and he's still lethargic, but he'll get up and kind of gently walk into things or just stand up and not move. My roommate came home and he randomly got spooked and and anxious. So I'm getting nervous of what to do with him while I sleep. I'm thinking of leaving him in the bathroom because it's a small room and he can't wander around but is it bad to leave him alone like that?