William was great from the get go. It is convenient that he lives in the apartment downstairs, so if there was anything we needed we got an immediate and helpful response. At the same time he very much left us to our own devices so we never got disturbed.
The area is fantastic, loads of great eating places, and a couple of large supermarkets with all the food you could need for home cooking, all the utensils are in the house, and there's a large fridge.
If you happen to be a Marvel fan, Luke Cage's series happens to have been filmed right on the corner, and two doors down there is an amazing cafe called Il Cafe Latte. I really recommend eating there.
The subway of 116th has three branches, as in three lines at three different locations. The lines 2&3 are a 5 minute walk away and takes you straight into down town. You can be on 42 St within half hour.
I can't recommend enough staying in Harlem and at William's.