Just got back from my stay 6/10/09 -6/15/09 and had a great time. Weather was great. This was my first trip as a solo traveler and at no time did I feel uneasy. The staff were great, especially Carlos at the pool bar. I read the other reviews about the high schoolers being rude and I agree they were a bit loud, foul languge, etc. but, you can't choose who stays at your hotel! They were only hanging around the pool bar one afternoon and not for more than an hour or two. The hotel was at about 1/5th occupancy.
My room was spacious but the bathroom shower was cramped. I had a slight maintenance need , called it in and someone was dispatched to fix the problem within 10 minutes.
Pay attention.....If you want the free breakfast buffet and free evening cocktail reception you must be booked in the Royal Club. I was surprised by this thinking it would be free for me but it was not included in my Orbitz deal. The food and drink rates were reasonable. The evening reception is from 5:30 - 7:30 and is only $10.00 (US) and from 6-7 you get two for one drinks (my great Chardonnay was $7.50 for two). The pools were warm the ocean was sandy and clean and the beach view from the hotel was of the entire Cancun strip. You can literally see and walk for miles! Downtown Cancun is available by bus for 750 pesos (like 75 cents.) You can catch it right at the bottonm of the hotel driveway and they run all night. Downtown is jumping! The people were all very friendly. I have stayed in Playa Del Carmen and PlayaCar many times before and always shunned Cancun thinking it would be honkey tonk but and now planning my next trip to Cancun. See you there! PS; of the 5 hotels I have stayed at south in the "Playa" area, all of the had that mildewy smell at about a level 6-7 out of 10, the Westin however came in at about 1.5 out of 10 great job!