This was the best Airbnb stay I have had. I'm from San Diego but now live on the east coast so I'm writing this from the perspective of a former "local". The location is amazing, a six foot sidewalk is all that separates the patio from Mission Bay, 2 blocks across Mission Blvd in the other direction and you are on Mission Beach.
The apartment is very clean with enough cooking utensils to make just about anything. Photos of the listing are extremely accurate. Just an FYI because photos can make spaces appear larger, it is a small studio with kitchenette, perfect for a single or a couple who are getting along extremely well. There's a full size bed that stores in the wall and a small sofa plus table with two chairs, but that is the extent of the furniture. Ample closet space. It was everything I needed as a solo traveler. The jewel of place is the patio, which is about half the size of the entire apartment, and has a loveseat, table for four, gas grill and gas fire pit. There was a full propane tank provided. I would typically go out during the day and then return for cocktails around sunset, sitting outside until bed. On summer weekends Sea World has firework shows which you can see clearly.
A short walk takes you to the Mission Bay Aquatic Center where you can rent kayaks, SUPs, and other equipment, and there's a sailboat rental place across the street from it. If you are going to be there for a while and think you'll do a lot on the water, MBAC has a membership which pays for itself after 5 rentals. I'd typically take a kayak out for a couple of hours each day. There are a lot of restaurants and beach shops along Mission Blvd., and a longer walk or bike ride will take you up into Pacific Beach, where there are restaurants, shops, and bars concentrated along Grand and Garnet avenues. There are three little liquor store/markets with in blocks that also carry a small selection of groceries. If you want to fully stock up there's a Trader Joe's and full-service grocery stores in PB.
There's a very convenient parking spot right across from the building. I would recommend renting a car or being prepared to take Lyfts or Ubers if you want to go to the Gaslamp, North Park, Balboa Park, La Jolla or other destinations in San Diego. Although there is good light rail (especially for a Southern California city) it does not go out to the beach, and other public transportation options are limited.
Communication with Jasmine was great, there was a slight hiccup with checking in as I had the wrong code for the key box, but she responded to me within minutes of my messaging her. Her mother manages the building, and was there to greet me with a Topo Chico and ask whether I needed anything. The apartment building seems to be about half Airbnbs or other short-medium term rentals based on the amount of key boxes, and half regular tenants. It's a quiet building, no loud partying as far as I saw or heard. People run, stroll, bike, and skate on Bayside Walk in front of the patio throughout the day and night, so you feel as though part of the neighborhood, which retains some of its funky beach town charm.
I highly recommend!