If you can't handle stairs, look away. This listing is at the top of four flights of stairs, including some of the steepest and smallest I've ever seen. If you CAN handle them, you've found an exceptionally clean, spacious, and attractive place to stay.
Unfortunately, it ended up being just a bit too cold for us to really take advantage of the rooftop area, but I can imagine having a nice breakfast there, and I'm jealous of people who stay when it's warm enough.
The space is well-appointed, the bed is comfortable, the location is convenient (when the #71 bus is running its proper route), and the view is terrific. The only issue is the stairs, which helped us feel like we were keeping in shape in between all the waffles and frites!