The place is quite small so I probably wouldn't recommend it for a prolonged stay or if you plan to spend a lot of time at home, but for our purposes (couple, spent most of our time out exploring & came back mostly only to sleep) the size was perfect. The location is also good, not very central but well connected. The one thing I would warn about is that the walls are very thin and you can hear other people in the building's conversations pretty much word perfect, so if you'll need total silence bear that in mind. Noise was not an issue at night - this was just in the morning & during the day.
All in all it's pretty great value for the price compared to other accommodation options in London and I'd definitely recommend it for a short trip!