We spent three nights in Maria's basement.
On the "minus" side, this is not a very quiet place because of the noise of the road, and as in most basements, it happens that noise comes from the upper level.
The very reasonable fare probably takes this into account.
We liked the location, which is convenient to access Vancouver downtown by public transportation. It is a nice 10-minute walk to the train station, which takes you to Waterfront in about 15 minutes. The appartment is comfortable, with all facilities. We appreciated to have access to the patio, which allows to enjoy full day light.