Grover's location is great! We spent a week in the app with our two kids and we definitely enjoyed it. The app was clean, spacious, and equipped as described. Kitchen hood worked efficiently, fly-screens at each window, sky light made the second floor very lightly. These items seem to be normal, but after other experiences I can say that they are not.
Additionally Grover gives a personal touch by paintings, a bottle of wine and even information and instructions in German language.
The unit is located right in the heart of Harlem. It is a good starting point for any destination in Manhattan because the metro is a five minute walk away as well as the bus stop. We felt perfectly safe in the neighborhood. New Yorkers were so polite and friendly. In sum: We strongly recommend the "Ehrfuerchtig house" for a NY trip!