Avoid the Woodbridge Hilton if you want a nice room.
The Hilton East Brunswick is actually a decent hotel (clean, large rooms, provides upgrades, etc.). Not sure what else you are looking for -- e.g., there are not a lot of restaurants, etc. right around the hotel. However, if you are looking for hotels around that whole area there are plenty of things to drive to.
The HGI must be new? What landmarks are close to it? Looks from the Hilton website map to be on the East side of 95, but I am not sure what kind of neighborhood.