Ok. Here are a few pictures of Mil Amores' rooftop deck:
Wedding Scouting in Mexico
Wedding Scouting in Mexico
Wedding Scouting in Mexico
It's a really cool location and there is a lot you can do if you wanted your party to flow through the house. Take a look through the entire slideshow and you'll see pictures of the house.
There is also Blue Tulum, which is somewhere between a boutique hotel and a resort. It's all-inclusive, high-end, but only has 75 rooms. They do not have a beach, but they have built a dirt/sand pad overlooking the water. It's not really sand, it's white dirt (coarser).
2008 Blue Tulum Resort Photos (Simpleviewer Slideshow Web-Res)
Wedding Scouting in Mexico
I coordinate weddings in Tulum (and other boutique locations), which is about two hours south of Cancun so I can help you negotiate and coordinate your wedding with either of these hotels. Let me know if you have any questions.