Despite the fact we only met at the end of our stay we had a good contact with London which was very helpfull for the remaining hours in NY.
The apartment was nice and clean and beds comfortable when we arrived and we immediatly have found our marks. The London's son explained what we needed to know to start. Numerous towels in the bathroom, more than necessary for us (4 people). Apartment was well situated at some meters from subway (red line) and at some blocs from other lines on 125th street west or east. Well harmed to reach NY everywhere (When we did not get lost in subway, that will remain a mystery for us !). Finally we all have a good and exhausting week in NY.