If you are visiting San Diego and your event is in the downtown area Gary's place, in Cortez Hill, is an excellent choice for sure. I was in town for a conference at the convention center and it was walkable for me (approximately a mile downhill). The space is also close to Little Italy and Balboa Park (and the San Diego Zoo). I got a tip from Frank (the site manager) about the FRED service (Free Ride Everywhere Downtown) and it worked out perfectly. I didn't have a car and didn't need to use Uber or Lyft at all during my stay. Would definitely stay at Gary's place again if I make it back to San Diego.