I've used 3 of the SSR laundry rooms...the one by the main pool has been well-described...the one at Grandstand is the furthest room at the "top" of the pool (away from the walkway to Carriage House). There are two washers & dryers--
The one at Congress Park is in the building where the restrooms are, to the side of the pool.
Don't know about Paddock...prior to the renovation that added the new feature pool there was a building w/restrooms and the laundry room, but haven't been over there since the renovation...
With all the laundry rooms, it looks like you have to insert coins to run the washers & dryers, but you don't...just push the coin slot mechanism in and the machines work.
The sign says each cycle takes 30 minutes, but it's closer to 40...