I stayed for 3 months, visited UCSD for research, so I wanted my stay near to the campus. It takes 10-15 min by bike, or 20-40 min by walk, depending on the distance from your place in the campus.
The room is always maintained clean, and the bed is very cozy. The private bathroom is also clean. The hosts guarantee your private. But if you want, you can have nice dinner with host family. The host has one big dog, who is very handsome and lovely. The host family is very open-minded and kind. I enjoyed our every conversation a lot. I recommend you to get reservation if you want to have a joyful relationship with this special hosts. Besides, the room is very comfortable to stay as is.