The location is great -- walking distance to BART and a ton of great restaurants, bars, and coffee shops. My personal faves are Julie's (coffee/brunch), Marufuku Ramen, and North Light (cocktails). Flo's place is comfortable, especially the bed!! Morning coffee and milk is a nice touch, as were the fresh flowers she left for us. If the weather is nice during your visit, the outdoor sitting area is a gorgeous spot to hang out in.
Some things to be aware of: You'll have to park a couple blocks away during weekdays to avoid the 2 hour restricted zone, but it's really not far at all and reliably easy to find a spot. This is a basement apartment, so it's dark during the day (but that shouldn't matter if you're out enjoying the bay or in the patio sitting area!) and you can hear noise from people walking upstairs and water in the pipes. The noise isn't too bad, but it's definitely noticeable so if you're a light sleeper and want a lie-in in the morning, bring a white noise machine. The unit doesn't have a bathroom door, just a curtain, so this is definitely better for a solo traveler, a couple or very close friends!