Unfortunately the first thing to note here is location. The flat is on the bottom floor, above the train line, which one can get used to. It is also below active businesses and somehow wildly loud residents at all hours of the night and very earlier in the morning. After staying in Soho as well I have to say this is noisier than in the loud party are of London.
The owner and the flat itself are nice, but it's really hard to look past the noise. Being woken to basically a performance of Stomp consistently between 3 and 7 every morning is just too much. Be a bit aware unless the host handles the people in the building who have 0 respect for sleeping hours.