I was just one night at the apartment to a short trip to London. The communication with Jerome was fine before and the day of arrival (a friend of his opened the door to me since he wasn't at London that day).
Also, Jerome's flatmate was very nice to help me and my friend to book a taxi very late at night.
The only problem to me was the bathroom: the one at my floor was broken and the other one was really dirty. That really bothered me.