Our room was spacious and airy - very pleasant. As noted, the shared bathroom is downstairs, and as is common in older houses, is clearly an add-in. It is small, but very clean (as is the rest of the house).
As others have noted, the sofa-bed is best for a child, not an adult-sized person. But the main bed is quite comfortable.
The location is great- easy to get to city attractions on the Muni, and a lot of good places to eat nearby. There are two coffeeshops on either corner. You also have the use of a microwave, mini-fridge, and an electric kettle, and instant coffee and black tea are provided.