The staff was very helpful when I accidentally booked for the wrong night. When I realized the mistake (moments after payment), we contacted Hotels.com, and they told me that they could only change my check-in dates if I were to pay for an additional night; they claimed it was the hotel's policy. My wife contacted the hotel, and within a few emails, the reservation had been changed to the correct date, with no extra charge to us.
When we arrived, we were an hour or two earlier than the check-in time, but they let us check-in and get settled into our room.
The room was cute with blue stone (maybe glass) details in the floor. There was separate area with kitchenette that had a gas cook-top and a cold refrigerator. I did notice that there were no pots or pans, or other cookware, but since we hadn't planned on using the cook-top, I didn't ask staff about it.
We had a sitting area outside of our room with a couple of chairs and a table, as well as a hammock.
The hotel is really close to the beach where you can swim, rent bikes, etc. We took a taxi from the ferry when we arrived, but we were able to fairly when easily walk to the ferry when we left.
For us it was a little expensive, but if you are staying Isla Holbox, I would recommend giving this hotel a try.