m_k,

The Hyatt is very nice, and has terrific views when the air is clear. But traffic between the Hyatt and the World Trade Center is very heavy on almost a continuous basis.

When you do brave the traffic, however, look for the black cabs (outside of major hotels). While they are more expensive than the other cab classes, the drivers are more likely (and more willing) to speak English. Also, they are installing direct (and free) radio connections to translators, which can be very helpful if you and a driver have problems understanding each other.