My boyfriend and I found Gene's apartment due to a last minute cancellation on us from a previous arrangement, but everything went swimmingly the moment we asked if we could stay with him.
This was our first year at Comic-con and we wanted to stay somewhere close enough to be able to hop right over to the downtown area (which took us around 30 min by bus, not bad), while getting a local feel for the city. Gene's place is in a beautiful and peaceful neighborhood and is actually walking distance to a nice strip of restaurants and shops. From the moment we contacted him to when our vacation ended- Gene was a great host the entirety of the way. He really is a fountain of information regarding any questions you may have about the city and is simply entertaining to talk to!
The room itself is nice and suitable for two people, but I wouldn't recommend trying to fit more. The bathroom was very nice as well and the apartment was kept in pristine condition. The only comment my boyfriend brought up is that it will get hot in the room, even at night time, but this was understandable due to the summer time weather. Here's a note that we didn't know: many apartments in San Diego don't have AC, which is weird coming from someone who perpetually lives with it on (from Miamj, FL), but it really wasn't that big of a deal.
I really would recommend staying with Gene to any of my friends and will love to stay with him in the future!