How about the swimming pool of Hanlin Hotel in Jinan?

I learned to swim there. 30 yuan, two hours.

You can go anywhere, you don't have to stay in the guest room. You can handle monthly cards, season cards, semi-annual cards, annual cards and supplementary cards.

The swimming pool is 25 meters long and has six lanes, which are divided into deep water area and shallow water area. Depth 1- 1.5-2-2.5-4m.