When we visit San Diego, we like to stay just north of Balboa Park. Steven's apartment is on a quiet dead end street and is just a few blocks from Balboa Park and less than 10 minute walk to a great Italian restaurant. The apartment was very clean and modern. Steven has done a great job with the interior design of the space. Others have mentioned that parking at night could be an issue but whenever we couldn't find parking on our street, we never had to park more than a block away.
The host has good communication skills, is friendly, and got back to us quickly when we had questions. This apartment will be our first choice on our next visit to SD.