Directions to condo from Cancun Airport:
There is a shuttle from the airport to Playa ($10-12/person, info kiosk in the middle of arrival hall once you've cleared customs and immigration) and also a Taxi service (about $50-60).

Follow signs to Highway 307 to Playa (heading south).
Drive for about 40-45 minutes.
As you get close to Playa there will be an elevated road/bridge in the middle of the highway.
Take this road and exit at the first exit (Ave. CTM, pronounced Ceh-Teh-Emme).
At the end of the exit ramp go about 200 yards and take the round-about onto Ave. CTM (also known as Calle 46 Norte).
Go down CTM toward the ocean. You'll cross all on the main streets running North-South (your heading is East): Ave 45, then Ave 40, then 35th etc.
Once you've crossed Ave 5th (about 1 mile from highway 307) you'll see a cluster of 3 new buildings on your right. The first one is Studio One. The one right after is Heliko.