We wanted a holiday to do some snorkeling, and just relax. La Sirena provided everything and more than we expected. Arrangements for shuttle service from the Cancun airport was made with the manager which included a stop on the way to stock up on groceries. When entering the grounds to La Sirena we were amazed by the beautiful landscaping and the cleanliness of the property and the pool. The staff were friendly and always willing to make our stay a comfortable one. The condo itself was excellent. Everything you needed was available. We mostly enjoyed the ocean view from the living room and the patio. You did not have to displace yourself to go snorkeling, as the reef is directly in front of the property. You do need water shoes to enter the water (make sure they fit in your fins) We saw a variety of fish, berracuda and spotted eagle ray. 5 minutes away there was a lagoon where you could go snorkeling. If you needed groceries, it was 1/2 hour walk away and there was a good variety of restaurants.
I would highly recommend this location for its' cleanliness, oceanview, friendly staff, landscaping, variety of birds in the morning.