This Google Maps mashup is catering to a small but distinct market, Slovak speakers who are looking for hotels in New York. If you are a Slovak speaker and you want to stay in the Big Apple then you aren't going to find a better hotel guide than newyorkcity.sk.
One great feature of this map is that the hotel rates are displayed directly on the Google Map. With this feature it is easy to zoom in on the area you wish to stay and quickly find hotels within your price range.
Each hotel map marker includes a link to a detailed review of the hotel. If you like the sound of the review you can then book a room via a link to Booking.com.