Overall, the flat is good. Here are the highlights:
1) There are some nice touches that I appreciated. It seems that a service is used to provide fresh bedding. Although I didn't use them, shampoos and soaps were provided just like hotels.
2) A folder describing the building and local markets, pub etc.. was provided which was very helpful.
3) The host is responsive to emails.
4) The flat is colorful and bright.
5) It is located very close to a tube station and a few markets.
6) Best of all, it is located in a courtyard off the main road and is very quiet.
Some things to be aware about:
1) The shower runs hot/cold randomly. (Scathing hot to bitter cold even if you don't touch the faucet.) I took baths instead so that I could control the water temperature.
2) The bed is not very comfortable .
3) The kitchen floor was dirty and I couldn't locate a mop to clean it.
4) Keys to the flat are retrieved and dropped off at a local market. This limits the check-in and check-out time to the hours of the store (only a 1 hour window to drop keys off as they must be dropped off by 10:00 but the store does not open until 9:00) and means that there is an additional stop you need to make with your luggage.
Overall a quiet place to stay and a decent value for the money.
Side note: Because I had to leave earlier than 9:00 to catch my flight home, I had to drop off the keys with my daughter (who has moved to London) and have her in turn drop them off at the market. In my teary eyed good bye to her, I forgot to give my daughter the keys. When I realized my error, my daughter retrieved the keys from customer service at Heathrow and dropped the first set of keys off at the local shop as directed, but two hours late. Yes, it was my fault. The cleaners had to retrieve a second set of keys (they didn't need to wait for my daughter to begin) and I paid the host an extra $70 to compensate him. Despite having a second set of keys, he seemed very stressed about the delay and at one point asked that I hire an Uber to drive the keys to him. (I did look into this and it wasn't an option.) I would have preferred to simply leave the keys in the flat (the door self locks) and have the cleaners arrive with the second set of keys in hand. I would suggest that future renters request this as a check-out option.