I just came back on Saturday and at least on the outside (perhaps inside too), tower 3 was under construction. They were working on reinforcing the balconies. This also mean that only 9 holes of the mini golf course were open.Are any of the buildings being renovated now? Last year we stayed at building 3 and loved the location.
I have stayed in Tower 4 twice, and Tower 6 this past visit. For me personally (and having kids), Tower 4 was a better more central location for us.