A small pool (Budapest)

It's a small - presumably thermal - pool compound of the sports centre, enough for three or four people to sit in comfortably. I guess it's used by sportsmen doing their training at the centre.
It's fun as it can be seen from the bridge and the jogging path, and one can sometimes see people sitting in it. I imagine looking out on the bridge and the island while having a nice after-training bath should be equally fun.