Charlotte was very helpful and responsive, HOWEVER the apartment was so dirty. It felt like we were staying in a lived in space with dirt and stains covering everything (the bed was even dirty and required the sheets to be shaken out). The host's stuff filled the cabinets (including old food) and everything was covered in spilled foods and grime. Additionally, there were spiderwebs all over also indicating that no one had been there in a long time. No paper products or trash bags.
Positives: Charlotte was responsive, hot water, wifi worked, and the heating worked. Also, only a 15min walk from the tube (which can also be a negative).
Overall: I found the place to be a bit sketchy and would recommend looking for another place.