We had a good stay here! It was not as convenient to downtown/Gaslamp area as I usually prefer (we rely on public transportation), but for the price it was worth the slight inconvenience of a bus/train transfer or walking 15 minutes to the nearest stop instead of 5.
Decently sized upstairs unit (access by stairs), with most of the space being the living room. It has 1 bedroom with a real bed (I didn't notice the size.. either king or queen), a couple chests of drawers, and a good sized mirror. The living room area has a long/large sofa (not a sofa bed, just a sofa) that can be used for sleeping, and a shorter (but wide) red couch that we used just for sitting, but a child or person under 5" tall can likely sleep on it comfortably. There was enough space between the two sofas for the air mattress we brought with us (once we moved the coffee table out of the way). The balcony was dusty, but the quiet street and available chairs/table still made it pleasant enough to eat breakfast or have a coffee outside.
A few towels and plenty of extra blankets were available. The kitchen was useful for a short stay. The bathroom was fully stocked with anything you might need. Bathroom door doesn't really lock, but it has a small frosted window so we had no problems knowing when it was occupied (you can easily tell when the light is on, for example).
They was an area near the desk where the wood was worn down enough that you could get splinters is walking barefoot, but we just put the coffee table over it to avoid problems. Wifi was decent enough to be able to stream the new episode of Game of Thrones on our iPad (after allowing some buffer time). No AC, but open balcony door, open windows, and ceiling fans kept us cool with no problems (temperature was averaging 75 degrees fahrenheit during our stay, they were mostly sunny cloudless days). The bedroom was the coolest room.
There is a cafe called Influx just around the corner that served good food and GREAT coffee. We went as often as we could!
Overall, this is maybe not the best choice if you are picky or looking for a more hotel-like stay, but if what you're after is fair price, space and safety, while still being in proximity to downtown, this is a good option. We felt at home by the time we left!