We loved the location, it was very convenient to an Underground station, especially when using the back entrance to the building. It is in the financial district, so some nearby places are closed in the evenings and weekends, but there are many options nearby.
There were a few problems with the place. As the listing states, there is no A/C, so we had to open the windows to keep it cool. Being in central London it can be a bit noisy with the windows open for cooling, though closing the windows and curtains completely does make it significantly quieter. Helen was able to send us the manual to the washer when we asked for it, but we weren't impressed with the performance of either the washer or dishwasher.
The biggest issue was the overall cleanliness. There was significant mold on the bathroom ceiling and around the tub. The window sills were filthy. The hot water pot needed cleaning on the inside. Overall it felt like the high touch surfaces were cleaned well, but other detail areas weren't touched in quite some time. The floorboards looked like they had gotten wet at some point in the past, leaving some bubble and gaps between them. The bathroom fan runs only automatically and intermittently with the bathroom light and doesn't give great ventilation.