I've done a lot of things in the last two weeks that I haven't talked about it yet.
One day I went with my boyfriend again to Aire de Barcelona which is an ancient bath that you can find in the city (Passeig Picasso 22).
It's the second time we go to relax there and receive a massage. You can enjoy of different "pools": one really hot, one very cool, one warm, one with saltwater and a jacuzzi. There is also a hammam and a place where you can have some tea or water.
You can choose the service you want that you will find in their website.
We've always picked the 2 hours of the thermal bath plus a massage of 15 minutes and I think that with this you go out really relaxed and pleased.
Another good thing is that you only have to bring your bathing suit, as they will provide you towels, sandals, shampoo, and everything you need.
So if you are in Barcelona and want to relax, this is the best place to go to.