We stayed in Yumi's unit for 6 days. Here are the pros and cons.
Pros:
Yumi was extremely quick to respond to any message. We needed a few extra things for the kitchen, a new TV remote (I guess the last guest accidentally took it!) and had a couple of questions and every time, she responded immediately. We were able to check in an hour early, which was wonderful, as we ended up on a very early flight and were super tired. She was very kind about our requests.
The neighborhood is lively and safe and we loved going on evening walks, looking at all the gardens and homes. We were able to walk to shopping and restaurants. Parking was a bit tight, but we were always able to find parking less than two blocks away.
The unit felt safe and was super quiet at night. It's behind the main house and has its own fenced area, which is concrete and gravel, with a fire pit. We enjoyed the fire pit, and bought wood and roasting sticks for it at Von's, a couple of blocks away.
The A/C unit was clean and powerful and we were grateful for it. There is also a ceiling fan. It was nice to have both.
The bed and bedding were comfortable. We didn't sleep on the convertible sofa, so I can't comment on that.
The bathroom was clean and the shower was roomy. Some of these small units have very cramped showers, but this one did not. The shower head and water pressure were good.
It was nice to have a table that seated 4, as my son had his computer set up on one side and there was still enough room for us to eat on the other.
Cons:
The biggest con for us was the lack of storage, especially if you have more than one person. I didn't realize when I looked at the listing that there was no closet. The door I saw is locked and goes to the outside, not to a closet as I had thought. There is a short rod high up, which doesn't show in the pics, and has only 4 hangers. There is a chest of drawers, but I like to hang stuff to air it and let the wrinkles fall out. There also wasn't a single hook anywhere, not even on the back of the bathroom door and the single short towel bar wasn't enough to hang more than one damp towel. I ended up buying some over-the-door hooks at the hardware store. The bathroom also has very little shelf space for your bathroom stuff, although there is plenty of wall space for shelves. It would also be nice to replace the circular mirror with a mirrored cabinet.
A couple of things that frustrated us were that the faucet in the bathroom is installed too far from the sink, so that if you don't turn on the faucet full blast, the water goes behind the sink instead of in it. And since the small space behind the sink is the only place to put things, they end up sitting in water. Also, the shelves over the kitchen counter are right up against the blinds, making them quite difficult to open and close. I'm not sure why this is, as there's a good 6" on the other side to center the shelves to give easy access to the blinds and window.
The towels were small and not very thick. Not a deal breaker, but it would be nice to have better ones. Also, most units I've stayed in in San Diego have provided a couple of beach towels and that would have been nice.
Overall, I think that if you're just staying a few days, it's fine. And I wouldn't stay here with more than 2 people unless you plan to live out of your suitcases and not do much cooking.