I stayed in the single small room on the top floor for a month. Everything was fine but if you are sensitive to noise and smell, it is a bit hard since many people (generally families with kids) stay in the house and they cook a lot, they also talk a bit loud sometimes. For a short stay (about a week or sth.) it's nice but for longer periods, I wouldn't recommend it so much.
Hua & Joel, and their dog were really friendly, sweet and helpful indeed.
Note: If you aren't used to small rooms, don't do it. It is really tiny but I was ok with it, I tend to adapt easily on that matter.