We didn't meet Marco and Kamila. We didn't stay at their place either. Their flat's front door had two locks, the first one on the top of the handle and the second one next to the handle. Although they left the key for the first lock in the post box, they forgot to leave the second one unlocked so we couldn’t open the door. Since they were far away from London, they decided to book a hotel for us. Marco was responsive and polite. He booked a hotel and sorted our accommodation out. Since our plan was just one night in London, we enjoyed our stay.