What she said and, while I don't have allow cooking in my professional kitchen - mine is a traditional bed and breakfast, I will make room in the fridge or pantry for guests that are staying a few days or more.
I provide as many spa-like accessories as I can. Bath Bombs and Shower steamers make a wonderful addition and they aren't expensive. I also provide shampoo, conditioner, and body wash.
We have a lot of other amenities, too many to list here, but I think the bath accessories have been the most welcome and unexpected surprise for my guests.