All in all it was ok!
Unfortunately, it is very noisy because there are lots of rooms in the house, also the room we booked for three people was way too small - if you're not really (!) comfortable with each other, don't book it!
The sleeping opportunity for the third person is pretty uncomfortable as well. It would be nice to have something to put the wet towels as well, the furniture is also not the finest.
We think that it is too expensive for what you get, but to put that in perspective: housing in London is generally really expensive.
We never met the manager, but the cleaning lady, who welcomed us, was very friendly!
Also Queen Park is pretty near to the city centre, which was cool!