We stayed at the Regal Sun while we were there over Christmas....stayed there for just under $800 for 9 nights. It has two portions, from what I have heard the tower rooms are nicer but we stayed in one of the wings. Rooms had exterior entrances (although ours faced the pool and a lovely green space between us and the pool). Rooms were not bad at all for the price, although a little small but for no more time than we spent in the room this trip it really didn't matter, plenty of room for two beds, a table and chairs, dresser, fridge and still be able to move around easily with 4 people. Room was clean, towels were nice and fairly thick compared to most hotels. The pool was very nice (although the heater broke while we were there as it was overworked due to the cold weather).
Regal sun is literally just across from DTD Marketplace. It was a very short walk away.