The hot spring is along the Xin'an River in Jiande and has a natural hot sulphur spring that contains 3.07 milligrams of hydrogen sulphide per kilogram of water, more than half the national standard of sulphur content in curative mineral water.
The resort has two ponds as large as a regular swimming pool, six smaller ponds big enough for a dozen people, as well as three separate rooms that feature one small pond.
Price: Xin'an River Hot Spring costs 136 yuan (US$22) for adults, 60 yuan for children from 1.1 to 1.4 meters, and free for children below 1.1 meters.
Operation hours: 12:30pm to midnight on Friday and Saturday, 2pm to midnight Sunday to Thursday.
How to get there:
Xin'an River Hot Spring: Hangzhou-Qiandao Lake Expressway - 320 National Road - Jiande's Shouchang Town