I've rented the room at 1669 Sacramento st with my girlfriend for 5 days and althought the house was well decorated, and perfectly located in a area really closed to the most places of interest,we couldn't give positive feedback to the welcome and to the house keeping, weve been given the Welcome by a Chinese guy that couldn't even speak and understand English, we've never met yumi and we didn't have the pleasure to speak with Katherine in person.
Moreover we have never seen neither the bathroom nor the all house cleaned or someone doing it.
I personally suggest to the host to take care of the guest more paying mostly attention to the House care.
Finally we have to underline that the price wasn't really worth especially because of the loss of breakfast and, again, appropriate cleaning service.
Francesca and Gianluca