I had a fantastic stay at Hotel Siesta Holbox.
It is conveniently located two blocks away from El Centro, two blocks away from the beach, and two blocks away from Hot Corner (the central party spot of the island). It's next to everything, and the staff is superb! Martha, Jhoana, and Nelly were amazingly accommodating to everything and anything I needed.
You will be paying for your stay upon check-in.
Call your credit card company before traveling so they don't block your card. Cash rules! Carry plenty of it.
Upon arrival, you'll receive a cold water bottle and a towel to wipe the travel journey off your forehead. You'll also get a bracelet for breakfast (included) at the restaurant Las Hamacas, located at the Villa Caracol Hotel, and you will have access to areas of that hotel. Ask for the shuttle to Las Hamacas 15mins before. That's how long it takes for one of the guys to drive over to get you. You will get a beach bag for your stay and a card for a beach towel which you can exchange for a clean one. There are bikes on the premises. I did not rent one, so I don't know the rental fee.
The room is big and beautifully decorated. The bed is heavenly and comfortable. Your room will be cleaned daily, tip. There is a Smart TV. The lighting is low, so consider packing a ring light as I did. Ask them to wash your clothes before your departure. The fee varies depending on your load. It's worth it!
Download WhatsApp because all your communication will be through there.