On daypass.com you'll find 1 hotel in Puebla that only take adults, usually from 18 or 21 upwards. The pool stays quiet, there is no kids club and the daytime programming is aimed at adults — it is the usual pick for couples and groups of friends.
They sell passes with a spa, hydrotherapy or a massage; some ask you to book the treatment in advance: Hacienda Santo Cristo.
Usually from 18, and they ask for official ID at the entrance to prove it. A few hotels admit guests from 16, and spa or massage passes usually have a minimum age of 18 even at family hotels. Each pass shows its minimum age before you book.
Yes. These sell passes with a spa, hydrotherapy or a massage: Hacienda Santo Cristo. Some ask you to book the treatment time in advance, and each pass says whether it also includes the pool and the hotel's common areas.
You book on daypass.com for a specific date and receive a confirmation with a QR code. Bring that confirmation — on your phone or printed — along with a valid photo ID matching the name on the booking, plus whatever the hotel asks for, such as swimwear. The QR is validated at the front desk of the hotel in Puebla on the day of your booking. More about how daypass.com works.