There are many hot springs in the mountains of Chiang Rai Province. Among them, the Phra Soet Hot Springs are only twenty kilometers from the city and have the advantage of offering a mineral swimming pool (water temperature is around 39 ° C) in which you can swim while relaxing. If you prefer more privacy, there are also hard bungalows with private pools but personally, I much prefer the swimming pool.
As often in hot springs in Thailand, you can buy small bamboo baskets containing eggs and boil them in pools where the water is over 73 °C. It takes 15 minutes for an hard egg. Note that there is also a small restaurant.