Everest intergraded school's 4-season pool "Stamina" - The first salted water pool in Hanoi, Vietnam

The pool uses saltwater and is heated by an eco-friendly system that reportedly consumes 85 per cent less energy than standard technology while ensuring warm water all year round. It is important to note that it can get really busy on the weekends starting from 7 to 10 AM and 3 to 6 PM because a lot of people come to the pool with their families. While there is nothing wrong with this, it makes swimming laps more challenging as you have to avoid splashing kids.