Dorothy is a lovely host who makes you feel more like a long-lost friend than a stranger. The space is private, as advertised, and very comfortable and inviting. The full kitchen is a rare amenity. The house and yard are beautiful, and you're two blocks from the very cool Commercial Drive, which has more restaurants, bars, and shops than you will possibly be able to visit during your stay.
Possible drawbacks: the bathroom is very small. I'm 5'8" and found the shower a challenge to use, and I had to bend down to use the sink. The bed is also small--fine for one person, but very cozy for two. The bedroom is at the front of the house and there is some street noise. Finally, Dorothy has a large dog who is very sweet but could be intimidating if you have any fear of dogs.
Overall, based on the quality of the room, the location of the house, and the general awesomeness of the host, I highly recommend this space for your Vancouver visit.