We stayed here for one night, and were very pleased at how much we got for the price.
It's very close to the bus station and all the major bus routes in Cancun, so you can stay here, at an affordable price, and still have a lovely room and access to the amenities in the hotel zone.
In addition, staying in the center is just more interesting than staying in the hotel zone, unless you are the sort of person who likes malls and nightclubs.
The bed was comfortable, the rooms air conditioned, the pool refreshing, the service pretty good. The brought fresh fruit to our room, which was a nice touch. Breakfast is included, but they messed our orders up and the food was disappointing.
I would probably go back if I was ever in Cancun again, but frankly, I'll seek to avoid ever going back there. If you can, go somewhere else in Mexico. You can can have the same experiences in nicer surroundings at a fraction of the cost in Tulum.