Of the all inclusive Cancun hotels which allow children, The Riu Palace is most likely the best hotel choice. The entrance of the hotel is magnificent with towering columns, stained glass ceiling, ornate decorative iron accents. This hotel is a Euro-Colonial style true to design and period. Off the lobby is a Euro style bar-pub, very chic and well done. The design, and style of the bar also true to the Euro-Deco period, majestic, ornate, clean and well maintained. The bar area is quite large, and never appears crowded. The bar area offers waitress service, and bar service. Just beyond the bar is a theatre. Evening productions, concerts, games, similar, if not better than you will find on a cruise ship. The Theatre is large, and the style is true to the Euro-Deco period. There is a bar in the theatre, and waiter service also. The Theatre overflow is a large outside covered terrace, Another full service bar on the terrace. The hotel has a number of restaurants, I recommend, (reservations and proper attire required)Euro style restaurant "Crystal", and The Brazilian style steak restaurant, and the buffet. During the day the buffet is offered 7 am until PM on a terrace overlooking the beach, and inside. At PM the buffet is only offered inside, and has various themes. Drink wise the Riu selection offers Dos XX beer, light and dark, bottled and draft, Champagne, the basic liquor list, wines from South America, etc...Never located any wines which we had an appreciation for, your opinion my vary. The beach is the best in Cancun, period. The beach is large, the sand is clean, and the finest white powder you have ever seen. The water is crystal clear, we went sailing and the coral, and fish, could be clearly seen deep in the water. The beach area, and the pool area offer, cabana service, drinks, towels, sun bathing loungers, and umbrellas. The landscaping is impeccable, and magnificent. There are two pools, with several bars, and several hot tubs, a small full service spa, with treatments by appointment, most treatments are additional cost. This hotel has the traditional all inclusive program, with several additions. The evening entertainment is the most notable. The hotel Euro-Colonial style will transform you and give you an escape unlike any other hotel in Cancun. You could believe you were in southern Europe, Spain, the Riviera etc. This hotel accomplishes a Euro style escape. The hotel is about 15 years old, well maintained, and clean, yet not updated. The fact that it is not updated only adds to the positive Euro experience. The rooms are basic, as in Europe. No frills, lots of tile, marble, etc. No room Internet, no in room wi-fi, no flat screen TV, with movies to order. The rooms are outdated, much like most older European resorts on the Riviera. You could easily make a movie here, and the viewers would believe it was set on the beach in Monte Carlo. There are numerous non-motorized water sports included on the beach. Most of the guests were also from Europe, the hotel was around 90% occupancy, and did not seem crowded, no lines. Before booking, I read reviews indicating the "Musty Smell". The rooms on the lower floors have the smell, most older hotels in La Jolla historic district has a similar smell, musty. I am unsure of the source of the odor, (ocean air, the water, the hotel age???), but it does exist. On my first day in Cancun, we made a trip to the Super market, a 5 min walk, the market is located across the street of the Intercontinental hotel, Here I purchased a couple of cans of Glade, Glade plug ins, Glade candles, probably spent $10-$15 lasted the whole week, and gave our rooms aroma therapy. Otherwise you will probably get used to the odor within a few days. This Hotel is a gem, probably 3 to 4 stars, and an excellent value. Great deals for this Hotel exists on the Internet, making this hotel my top choice for "All Inclusive" hotels in Cancun which allow children.