Tell me about the indoor swimming pool in Huairou. Which is better, price or water quality?

The swimming pool in Xiling (near Huguang Police Station) is cheap, and there is a summer school, which is about once in 30 yuan. Longshan Hotel (opposite No.1 Middle School) has better water quality than Xiling, and its swimming lanes are long. There are also summer classes where you can get a card, which is relatively expensive. In the National Defense Science and Technology Commission, it is said that the monthly ticket and 5 yuan are 1 time.