The host is super responsive and the listing is accurate - pics, location, etc. are all accurate. My 4-star rating is more on the location and size of the apartment than anything else. It is super quiet and residential - if you need anything it is a 10-12 min walk to the nearest convenience store or Underground station. It got to us on the 3rd and 4th day to walk up-and-down repeatedly. Also, the apartment and bed sizes are small - it is the norm in London but was a bit of a setback when we first saw it. Fortunately there is a sofa-cum-bed in a third room - but the place is just sufficient for 4 (not 5).
All in all, the host is great and listing is accurate but know the limitations (quite residential + small-ish place) when you choose.