Overall, I had a good stay in this flat. Excellent location near to Old Street tube station and lots of restaurants and shops nearby, but I may be partial as I used to live in the area. Flat is fairly modern and above average by London standards. The flat has 1.5 bathrooms (1 en-suite in the bedroom and a guest bathroom in the foyer). I was also glad that the flat had two fans which is a must during the summer.
My biggest complaint is that the pictures in the listing were not of the actual flat, and that bait-and-switch cast a shadow on the overall experience. The flat pictured is a good bit bigger and better furnished than the actual flat. Hopefully the hosts will update the listing for a more accurate representation. Also, the flat faces the back alley/garbage bins and an active construction site next door, so don't expect any kind of view.
Would I stay here again? Quite possibly, especially now that I know exactly what I'm getting. As I said, it is a pretty good flat overall. There was just a disconnect between the expectations created by the pictures and the reality of what you get that changed the sense of value for me.