I love NY but too bad it's so damn expensive. I paid 1000 for a 5 day stay. AND that's cheap! If you could afford staying at a hotel, expect tiny little rooms. AND if you could afford, try staying at the Roosevelt Hotel or around it. If I remember correctly, it was on Madison and 45st. That's where I stayed and it was with in walking distance to almost every part of NY; Time Square, Empire State, Madison Square, B&H (stay away if you can or else it will be more money spent), etc. Although some might be about a 30+ mins walk, to capture and see everything in NY, it's best to walk. And it's a 10-15min bus ride to World Trade, Nasdaq, Chinatown, Little Italy, Soho...etc.
If you dare, check out cragslist.com and see if any one is renting out their place for the week. It is usally a lot cheaper than staying at a hotel. A LOT CHEAPER!