I hope it works out too. It sounds like you're very considerate, and I'm sure things will go smoothly.

I've rented a small apartment from someone (above their garage, so we weren't quite as physically close as you're going to be). They definitely did NOT clean my bathroom or supply any cleaning/laundry supplies. They did give me access to the washer/dryer, but I'm pretty sure I bought my own detergent.

I absolutely agree with Angelique about clear boundaries. And, yes, making sure you're dressed when you are in "common spaces" (living room, kitchen) is a good idea.

Even though he won't be cooking, he may want to use the fridge (if he has leftovers from a restaurant, for example, or milk for his coffee) so you of course can make sure he feels welcome to that and leave some space for his stuff. Same thing with the rest of the kitchen, he may not "cook" but might want to heat up some water for tea/coffee, or toast a bagel or something?

I think it's lovely that you'd invite him to share a meal. Probably not necessary or expected, but I don't think it's an imposition. If you feel like sharing, you can just casually let him know you've got enough to share and that he's welcome to a plate. Just be careful about boundaries - don't push (not that you would!) if he doesn't want any, and be careful to not set the expectation that you'll be cooking all the time for him!

Good luck with it! I'm sure once he gets there you both will settle into a routine. The biggest thing that I always found with roommates was good communication. If something happens that you're not comfortable with, or if he seems uncomfortable, being able to talk honestly and kindly is such a huge help in getting past all the little weird things that pop up when living with someone else.

Good luck!