Bici en Playa (Playa on Bike) is a new program that provides tourists and residents free use of bicycles in Playa. You provide an id and sign a waiver, and you receive a bike rental, helmet, umbrella?, and city map with points of interest. I had also read at one time that there would be a $200 peso deposit to be refunded when bike is returned, and that the bike rentals were for a maximum of 2 hours at a time. However, I can no longer find the source of that info to confirm.
The program was created by Ideas del Mar and Solidaridad (the municipality which Playa belongs to). The bikes can be found at 6 bike centers across the city.
This is one of the centers located at 5th Avenue and Calle 34.
There will be a free organized bike tour on Sunday, May 8th. More info here.