We had a very nice stay in Cancun, the trip was a last minute decision, and we booked the condo the day before arriving.
The location is central, you should have no problems even without a car, the view of the ocean is fantastic, and it was quiet enough there, which is what we wanted, and were not confident we would find in a hotel. Jacky was trusting, accepting our reservation without securing payment with a credit card ahead of time, and also trustworthy, getting us the key without any hassle or waiting.
There are some comments about hard mattresses, but we felt they were just firm and it was just fine.
Also, this place is cheaper than other rentals in the same condo building, b/c it has not been renovated recently and the TVs are old etc. Overall, we think this place is a great value.
The last advantage of this place is being right next to the Kukulcan plaza mall where you can find some dining/shopping options and a grocery store.