I had a pleasant stay at Shlome's studio apartment and given the price of accommodations in London, I'd consider it a good deal. However, you should know what you're getting into.
The room is very small and is not for the claustrophobic. The bathroom is "have to sit side-saddle on the toilet"-small. The room can get a little stuffy which encourages you to keep the windows open, but there is a fair amount of street noise from people and from trains pulling in and out of the station.
On the plus side, the bed was one of the better Airbnb beds I've slept in, so the noise didn't bother me (though jetlag certainly helped). The apartment was spotless. The shower had good pressure and good hot water. And the location can't be beat.
So long as it was a short trip and I was packing light, I'd probably stay here again.