Positives -
Dennis was lovely and helpful, lending us his umbrella as it rained the whole day we were there
The design of the space was cool, old school American
It was clean
Great location by lake Merritt
Negatives -
However there are a lot of bad points which made our stay somewhere we wouldn't recommend.
Unfortunately the space is essentially a converted garage, making it very breezy and cold. This is addressed by a one bar heater which just isn't big enough to heat the room. I'm sure this is fine for most of the year, but for this time of the year it makes it an unpleasant place to be.
Also, the hosts have access to the garden in front of the guest house, which means you basically have to have the curtains closed at all times so you can't be looked in on, making the space feel dingy.
Although comfortable, the bed is small and served with lots of blankets rather than a duvet, which again aren't suitable when it's so cold.