My friends and I stayed here for three nights, and it was a very interesting trip.
First, I would like to say that the area is lovely. It was about a 10 minute walking distance from Campland on the Bay, which is a camping site that has a Cantina, a jacuzzi, live music, a bay with public swimming, and a marina where you can rent water activity equipment. I personally went to Campland at 9 AM to rent a paddle board for an hour and it was lovely.
It only cost about $10 to Uber to Pacific Beach for restaurants (we went to el prez for sunset - highly recommend!)
However, we had some hiccups within the BNB itself to put it lightly.
The one that caused the most hassle was that the stove and oven did not work. The BNB provided pots, pans and cookware so we bought groceries such as eggs and stir fry, but once we got home, we literally could not turn the stove or oven on. The stove would spark, but no gas would come out of it. So alas, we couldn't cook anything over our whole stay. (They also proved a wine opener as well, however it wasn't strong enough to pull out a cork so we had to get our own). They also said in their initial message that they would provide milk, coffee, etc, but alas these were not provided.
The next most prominent thing was the wifi. When we first got there, it had a different name than what we were told it was, but were able to find one with a similar name, connect to it after several failed attempts, and then share the password with each others devices. The wifi was very splotchy, and we all ended up using our own data because it was simply not working. I couldn't do work or open emails on my laptop and used my phone as a hotspot. When we would throw something on the TV (they did provide a Roku which was nice), it would stop partially through whatever we were watching to buffer or load, and at one point, it just wouldn't load at all because it wasn't "connected to the internet." We spent 20 minutes trying to figure it out, disconnecting out devices from the wifi if they were, and eventually used my laptop for Netflix via my phone hotspot until later in the night it began to work.
While looking around the kitchen, one of the drawers was broken (by the window, to the left of the sink) but it was empty - so it was more of just another thing to take note of to report for repair.
Parking was a bit competitive, but they had informed us that it would be in their directions. One of the nights we did have to park on the street, but the others we were able grab a parking space behind the building.
The last annoying thing was that the sink would randomly turn on - it was as if the handle of the sink wasn't tight enough and the weight of the handle would pull it and start running the water.

Entering and exiting the location was easy. We felt safe as we needed a code to get into the main gate, and then another to get into our BNB. There were security cameras as well that made us feel comfortable.
Everything was relatively closely - only about a $10 uber away from Pacific Beach and Belmont Park which were fun attractions. We also went to Balboa park which was entertaining and would highly recommend visiting if you're in the area.
As for Anthony and Martha theirselves, they did send us a message after our first night checking up - but this was before we had discovered our oven didn't work. They seemed very genuine and polite, and even offered us suggestions on what to do during our stay. Once these appliances get fixed, I'm sure the next tenant will have a lovely time.