Never stayed at Blue Tree--saw it form the outside and it looks okay, but not like anything special or outstanding.
Regarding WEstgate--I think the review that have been negative were mainly about the villas and not the Towers. That said, most of the negatives came from two different people who just posted a lot. We stayed at Westgate Villas in dec and while i did not consider it a LUXURY resort by any strech of the imagination, it was not anywhere near a dump either. the staff was very helpful and friendly, some of the amenities are very nice--like free paddle boats, a little "train" that transprts you throughout the resort, very nice high chairs at no extra charge and some others. The reasons I wouldn't rate it as a luxury resort--not comparable to Vistana Villages for instance or a Marriot or Hilton resort--were; tile not carpet in the living area made for a very noisy villa, bathrooms are comparable to a Motel 6--not bad, just not cool either--bland decor, lots of pools, but again just pools, nothing special, and finally, our villa did smell strange at times.