It's as advertised. Things to note:
1) Bring water bottles. London water is VERY hard, i.e. full of calcium salts, so don't drink from the tap.
2) The toilet seat doesn't stay up.
3) The toilet hose is a nice addition (being brazilian, I appreciate it), but it leaks a lot.
4) Maybe it's cultural, but it felt really weird taking showers in a bathtub. Ah, and shower the curtain is depressed, it really wants to hug you. I pushed it out of the tub, which solves that problem, but makes the floor wet.
Other than that, it's really close to Camden and Central London, which is great. Tube station is like 200m away. For short stays, it's good.