I returned to Seattle from New York with my mother to attend an award ceremony and stayed six nights at David's place. It's a very conveniently located and cheaply priced space at the quiet north-east end of the university district, not entirely walking distance from the campus unless you're a champion walker, but the neighbourhood is clean and extremely beautiful. There's also a bus stop right in front of the house, though we didn't travel by buses a lot.
The house itself is fantastic, and David provided an unending supply of towels, tea, coffee, cup noodles, soft drinks etc., but there are several guests at a time and one of them (I imagine only one!) was always leaving the bathtub in the common bathroom filthy. Since David doesn't live in the premises and the common spaces aren't monitored every day, leaving notices about this for the guests may be a good idea.
Overall, this was a really good stay! David was very responsive as a host. He promptly extended my stay by two days a week after booking because my travel plans needed to change. He always answered texts. I will definitely be returning whenever I come back to Seattle.