First, Kelly is really a super host: he’s friendly, always trying to help and make you feeling comfortable. He would try to reach your expectations and has been 100% successful.
The house is a nice 1906 house, mostly made of wood. The bedroom is large, comfortable, and has a useful dressing. If you have forgotten some stuff, there is all you need in the bathroom. The house is in the center of the City (San Diego is a large town, but the downtown part is small): everything is at a walking distance, included buses and trolleys.
It’s a bit noisy because it’s central, but I got used to it. Kelly provides earplugs: I used them only once while I was jet-lagged. Planes ARE part of San Diego because the airport is IN the City. So, one can expect a cheap course from the airport, but can’t expect the silence of the countryside ;). Around you, you will find a few hotels which chose to be in the same area.
I would come back to Kelly’s any time I’m back in San Diego: that's one of the places to be.