Communication was done through an agency rather than the flat owner. Overall, the flat was very clean, location was great and instructions were clear.
There are only two issues we faced with the flat. If you require a service from the agency, it seems they offer little help. The flat is supposed to accommodate 4 guests but there was only one duvet and so one of us was left cold in the night.
Secondly, the cleaners seem to just unlock the door and walk in which gave us both quite a scare on two different occasions. There perhaps should be better communication as to when is the right time to just walk into the flat when people are inside and sleeping!