Relaxed Luxury and Tranquility // All Inclusive // Only Adults 21 + //. The Sian Ka'an at Grand Tulum is a quiet luxury vacation out of the ordinary and close to everything guests want, including personal butler service. The beach and the coral reefs will surprise guests and offer a sense of tranquility everywhere. VIP check-in is a serene affair, and the rooms are amazing, from the L'Occitane bathroom facilities to the private plunge pools and hot tubs. Relax in the beautiful Sensoria Champagne Lounge & Terrace or enjoy spectacular views in the infinity pool. Here guests enjoy the highest levels of service.