Lydia was a wonderful host - she accommodated our early check-in request, was extremely responsive through email, and provided detailed and thorough check-in instructions for us.
The flat itself is very clean, in a quiet and peaceful location, and just a 3 minute walk from Farringdon Station. Good water pressure in the shower with enough hot water for about 2 showers, strong wi-fi signal, and plenty of dresser and hanger space for clothes.
As noted in the listing, there is NO A/C, so it can get quite warm (there is a fan, which helps a little bit).
Also, we had a small issue with not having dry towels and duvet cover when we arrived - they had been washed, and were hung up on a rack, but took a day and a half to dry. Other than that, a great place to stay! I would absolutely consider staying here again if visiting London in the future.