In booking an extended stay (about 20 days) on a futon in someone's living room, I was a little apprehensive about my living conditions, privacy, and comfort. I was quickly disabused of all of those concerns.
For a futon, the sleeping arrangements are very comfortable. The couch flattens and is soft and comfy -- there's a divot down the middle of it where it bends to become a couch, but it didn't bother me much.
Jose is a superlative host. Though I was sleeping in his living room, I never once felt a lack of privacy or control over my environment. I felt safe, accessible, and comfortable throughout my stay. He is generous with closet space and access to the apartment's facilities, he is approachable about any needs or wants, and he is fantastic company during leisure time. I count Jose as a friend now, more than a former Airbnb host.

Jose you're always welcome to come chill in London if you get a chance!