If you want to go for a relaxing swim in a local pool, this is the best I’ve found so far. You can actually see the complex from the MRT on the left side between Bedok and Tana Merah on the way to Changi. There is one professional size pool that is mostly populated by serious exercisers, one even larger one where the water level is everywhere around 1.2 m, and then one for kids. Even on a Sunday, it is not too crowded and there are more than enough empty chairs. Entrance is 1.2SGD. Unfortunately, there are no facilities to eat or drink. And it is a bit out of the way: take the East-West MRT and get off at Bedok and walk about 500 m towards Changi, or take a bus(the 2 takes you there, but is rather slow)