The new room will have the hotel's first ecological feature: a solar heated water system- but rather a Heath Robinson one. It is just a roll of black pipe which we will leave like this, rolled up on the roof in the hot sun.
I just refused to put another electric water heater in.
A nice Indonesian engineer who stayed in the hotel the other day explained this system to my plumber, who at first was very sceptical, but then followed the instructions.