This ground-floor apartment (owner lives above) has an amazing location -- it's on a quiet street, but just one block from the harbor/waterfront, from the local park with summer concerts, and from the restaurant/shopping street. Watkins Glen State Park, the swimming beach, and two grocery stores are also walkable (within 1 mile). We barely used our car once we arrived. The host is very quickly responsive to questions.
The apartment is in an older house typical of the neighborhood, and while not updated, it's generally functional and well-supplied. Two air-conditioners in the central main room cool the apartment fairly well even though the bedrooms don't have AC (fans are provided). The industrial-size washer and dryer are very handy.
Some aspects could be improved, especially lighting -- some rooms are quite dark even with all lights on. Bedding is noticeably worn. Other characteristics of an older house (uneven floors, uneven/low ceilings) might bother some people but not others.
Overall, we enjoyed our stay here!