Efrain's place is in a fantastic location for all things Balboa Park-related. While we were there we enjoyed the ease of walking to the San Diego Zoo, Japanese Friendship Garden, and the museums and art galleries. There were grocery stores and restaurants within walking distance, too, which was lovely. The location is excellent.
The space is comfortable and has all the basics. We also appreciated that there were a few waters, sodas, and snacks awaiting us when we arrived. It's not a fancy place, but it's a great home base for going out on daily adventures and returning in the evening.