I stayed here for almost two weeks, and it was great. It's super close to the highway for driving into SF, the area is nice and suburban-ish for walking around. The place is kinda of tucked under a house, so it's somewhat of a basement thing. There are still windows that let in a decent amount of light but it's not super bright inside. The outside courtyard/garden area is so so pretty.
The bedroom is connected to a small garage where the washing/drying machines are. It was convenient having the washer/dryer right there, but sometimes the garage would open in the morning, and it's pretty loud if you're in the bedroom, so that can be a bit startling.
Bugs kept finding their way in -- I killed a number of spiders, flies, and other gross things. The place wasn't dirty, I guess there were just little places where these things could sneak in. That's probably kind of inevitable in a basement-ish thing in Northern California, but still not fun.
The bed and couch were super comfy. There was plenty of space for us to move around. The shower/bath worked fine. There were plenty of pots and pans and plates for us to make food. The mini-fridge has a small freezer part inside of it, but it unfortunately didn't stay cold enough to keep ice cream frozen.
Marlene was a great host and made check-in and check-out really simple. Parking right out front was never a problem, and it made driving places super convenient.
I would totally recommend staying here, just be prepared to kill a couple spiders (or catch them and release them outside, whatever floats your boat). But overall I had a great experience and would definitely stay here again.