The location is great, very close to the beach and bay, but definitely not "100 steps to the ocean" and "50 steps to the bay", like the posting said. This might seem like a petty thing to point out but if you have kids or need walking assistance, it's worth mentioning. The parking situation was bleak; it was spring break when we visited and trying to find a free spot was a little. The free parking lot described in the posting has about 20 overnight spots and it's not a block away as described; more like 5 minutes. Again, not a huge concern but worth mentioning if you are solo and need to walk by yourself through the alleyway to get to this Air B&B. You definitely need a car if you want to visit natural attractions in La Jolla or farther east but just be aware that you may need to drive around much longer than you might like to find overnight parking. Uber or Lyft is best when staying in Mission Beach, for sure.
Besides these minor points, the location is in a great, walkable area for restaurants, coffee shops, the boardwalk and bars. The interior is minimalist and I loved it. A lot of thought was put into the details of this little apartment; coffee and tea options, beach towels and boogie boards, even floss and cotton balls all added up to a very homey feel.
Definitely recommend staying here if you are in the Mission Beach area, just don't rent a car if you can help it :)