Waldemar is a great host. The apartment is clean and the private room has a good size for a couple. The place is next to the subway (green line is about two blocks away, and the blue line is about 6 blocks away) and in a good neighborhood in Brooklyn.
If you plan to stay more time in the apartment (apart from the room), you may miss some privacy. There was no key to our room, but it was no problem in practice. But if it's a concern for you, ask him in advance about this.
All in all, is a great value and Waldemar is a nice host. I recommend to stay there.