If his sauna is the one in the picture, it has a flaw. Benches are placed too low. Your feet should be approximately at the level of the top of the stones. The

If his sauna is the one in the picture, it has a flaw. Benches are placed too low. Your feet should be approximately at the level of the top of the stones. The sauna looks similar to a barrel sauna and they often are too low due to curvature to allow placing benches high enough