We were in San Diego for Comic Con this year and were disappointed that we couldn't secure a hotel room through the SDCC room block. Once we knew we were not going to be housed in a hotel, I looked through Airbnb for a place at a reasonable price and near the convention center. Check and check, this place showed up and we booked it immediately.
Not only was the communication with the owners easy and timely and the instructions provided to get into the house were very detailed and easy to follow. The pictures of the apartment didn't do the place justice. It is small, but it was very clean and stocked with all of the essentials. Plus the walk to the convention center was a quick 10-15 minutes and it was also very close to the Gaslamp. I would just note that if you are with younger kids, I would recommend ubering as there were a lot of homeless people in the nearby area. We didn't have any problems, but just a note for families who stay here.
Would I stay here again? In a heart beat. Easy to work with, nice clean place, and great location. It doesn't get better than that... plus, as Drew Carey would say, the price is right.