Very nice stay in London. Communication with Albert was easy - he responded quickly in-app or via text messages. The apartment was surprisingly spacy, with nice rooms and all being very clean. Overall, we were extremely happy with our stay and would happily pick it again if we came back to London.
The one thing to be mindful about is the size of the beds - they will be cosy for two people - especially if you are used to bigger beds at home (note - I am not suggesting this is not as advertised, merely a cautious note if your other half is a light sleeper :)).