I stayed at Erica and Alex's place with a friend and it was really great. The building seems to be pretty new and was very modern, the view was just as advertised and getting around in London was quite easy – there's bus stops right in front of the house and an Underground station about 15 minutes by foot. I sadly didn't get to meet Erica personally, but Alex was there during our stay and was super nice. He messaged us and asked what we'd like to eat for breakfast beforehand, which I found very thoughtful – so breakfast was provided and we could use everything in the kitchen. We could even choose between regular and memory-foam pillows! There was also a spare EU-adapter for the electric sockets (we brought one, but it was good two have two as we had two smartphones that needed charging :D).
One thought: there's only one big blanket, so if you book for two people and you're not a couple or close friends and you'd like two blankets I'm sure they'll provide it for you too. We didn't have a problem with it but maybe others would like to know beforehand :)
Thank you Alex!