The room is small but functional and clean. The common bathrooms are modern and clean especially if you think about how much they're used, but it's not easy to find a moment they're free. I guess the number of rooms compared to the number of bathrooms is a bit disproportionate : we had to wait for about 15 minutes to be able to get a shower and same to go to the toilet (the toilets are in the bathrooms).
The real problem we encountered was the size of the bed. It's crammed into a space where there's already the beginning of the roof and if you're over 1m75, basically you can't stretch you legs, unless you sleep without a pillow. Perhaps taking away the headboard would already help... but I would advise people over 1m80 to look elsewhere.
Prices in London are crazy, so I guess it's quite reasonably priced compared to other places, it's clean, in a central spot and you can arrive at whatever hour you need to, but for what's offered I still find it crazy expensive, however you'd have to keep in mind that it's the case almost everywhere in London these days.