I stayed here for an extended amount of time, over 1 month.
Syed was extremely helpful on multiple occasions. He went out of his way to provide an external heater for me, when the radiator wasn't working, and he also kindly provided a full length mirror on request. And when I mentioned the shower drain was blocked, he promptly organised a plumber to come out! All in all, very helpful host and extremely quick to respond.
As for my stay, there were a few bits missing that could have contributed to a 5* stay (Eg, a bin, bathroom mat, doormat, somewhere to hang up wet laundry) but they were not essential. It would have been nice to have a heads up about the entrance to the apartment, as it was located down the side of a main house, through a side road. There is access to the main house for the washing machine too, which wasn't mentioned beforehand.
The apartment itself is quiet, and very close to Sutton town centre, bus stops going elsewhere, and a 6 minute walk to Sutton station. Very good location.
The WiFi connection was acceptable, and strong enough to check emails, do a small amount of work, or watch a very short video. I had to hotspot from my phone a few times to do work that required a stronger data/internet connection.