We didn’t get to meet Sergio but had no issues finding the key. The flat is very spacious and clean and conveniently located very near Barons Court station. Some of the heaters were turned off when we got there and we could’nt get them to work but the communication with Sergio and his team was great. They are very responsive and the problem was solved quickly enough. We would definitely consider staying there again as it was perfect for a family of four exploring London.