Really struggled with what to rate this stay. On the one hand, the flat is well-equipped and comfortable, and although we needed to contact a call centre to assist with issues, they were fairly quick in responding. It's close to Whitechapel station.
However, there were a few downsides. Other reviewers have mentioned the slight inconvenience of having to pick up and drop off the keys at a different location - although it's not far and this wasn't a major issue.
However, the key we received didn't work and became stuck in the external lock. This meant the door wouldn't open and all the building residents were trapped inside. When I tried calling the host's call centre for assistance I was put on hold for half an hour and then told I could organise my own locksmith but would probably have to pay for it myself! Eventually a neighbour called the fire brigade. The next day a new key was couriered to us.
The flat itself was fairly dirty. It hadn't been dusted and there were some questionable stains on the couch. The coffee machine was mouldy. It's also in a dirty building, with stains and smells in all the common areas.
TLDR: This place is fine, but I wouldn't necessarily stay here again