Great apartment in a great location near Brooklyn bridge and One World Trade Center.
Avoid large and heavy luggages as there's no elevator and the stairs that lead to the third floor are steep.
The bedroom windows are not really noise proof so think about bringing earplugs if you are a light sleeper. Unfortunately for us, there were some road works while we were there (with jackhammer as early as 7am) but I guess, that's New York! At least we never overslept and fully enjoyed visiting the city all day long ;-)
Note that there is only one real bed so for our family of 5, the parents slept well but the kids were sleeping on coaches (covered by bed linens) and on an air mattress.
Jaclyn were friendly although we did not meet her as it is a self checking.