This is one of the best locations in San Diego, especially if you're planning to spend time surfing and on the beach. Pacific Beach was stunning and it was right outside our door; not to mention we were walking distance from plenty fabulous bars and nightlife.
The Airbnb comfortably slept 7 people, though 1 person had to sleep on a pull out couch. The 2nd bedroom has a queen bed and twin bunks, so it fits 4 people very comfortably, but it does not offer much privacy to those staying there (and all are expected to share a bathroom). With that being said, everyone in our group was quite close and we were there for less than a week (6 nights), so it worked out very well for us! The place is clean and the rooftop view is amazing. Every unit in the building has an oceanfront view, which is pretty special.
Our only negative experience was that we got a slap on the wrist for leaving our wetsuits / surfboards on the balcony outside of the rooms -- apparently it's against the rules to leave stuff out there (we hadn't known about that beforehand). Be warned -- if you violate these rules they may attempt to fine you ($100). Not being able to use the balcony isn't a huge deal -- just means the place may get a little more sandy!