i've just read that the new riu palace antillas (old westin) is adults only - well that is how it is being advertised in the uk through. holidays went on sale today for 2015 and this hotel is shown as adults only. below is the description from the brochure, it's shown as a 5 star hotel (but that is by uk standards).
The adults-only Riu Palace Antillas is pulled up against Palm Beach, so you’ve got white sands at your fingertips. There’s a pool and a terrace for sunbathing, plus a handful of restaurants to pick between. The hotel’s had a complete makeover, so everything’s in mint condition. Bedrooms come with all sorts of extras, like sea views, flatscreen TVs and 24-hour room service.