Positives:
It's a brilliant location. It's very clean and comfortable. Host seems to be perfectly receptive. The photos of the modern comfortable spaces are accurate.
Cons:
In the middle of winter the one old radiator mean't that it was very chilly in the apartment and took hours of it being on full blast to warm up. The bathroom was arctic, and the towel rack didn't appear to heat up.. Also, if you're a light sleeper and you need to be out late, you'll be woken by the tube pretty early as it seems to pass right underneath. Bring some ear plugs maybe.