Edgar is a great host. The communication ahead of our visit was transparant and easy. Edgar was there to give us a warm welcome. The construction noise was basically non-existent. The sidewalk adjacent to the apartment was still, blocked but we have not once heard serious construction (neither during weekdays or on the weekend).
The location is perfect: a relatively quiet street, but only a couple blocks from Central Park, Madison Ave, 5th Ave and Lexington Ave. Multiple metrostations to any location in the city are very near (we used the 6 and Q-train mostly). On the first day the wifi signal wasn't too strong, but Edgar immediately came to fix it, before we could even notice.
Only thing that caused quiet some noise was the heating system, it seemed to be something with air slipping out of the pipes. However, turning it off eliminated the problem (consider that the bedroom is pretty well heated by the floors above and next to it, so turning it off was no problem even in late march).
Thank you again, Edgar, it was lovely!