We found this place to be a great value for our money. Our extended stay (5 nights) were much more affordable because of the apartment's amenities, such as full kitchen (limited but sufficient wares, though), washer/dryer, Internet. The neighborhood feels safe even late night and the subway is right there. Inwood (207th St) is the last stop of the A train and service is not always available. Street shuttles are provided at no cost to/from 207-168th St, which means that your 30 min ride to Times Square will turn into 1 hour or more. This is specially bad after walking all day and trying to get back "home;" it took us over an hour and a half and three transfers from Mid Town around midnight on a Saturday.
Waldy is a great guy, attentive and responsive. His building is very NY on the dirty side, but the apartment shows care, it is spacious and comfortable.