We stayed in this seemingly nice apartment in Prague. However, first night we were there the boiler in the bathroom cause us to be intoxicated with a nearly lethal amount of carbon monoxide. The doctor said if our friends hadn't found us so early we would have been dead in a few minutes. We had to spend the entire night and following day in the Prague Intensive Care Unit with a high dose of oxygen for 17 hours. We consequently did not get to see the city. Emil did refund us and arrange new accommodation but did not help cover the hospital bill and told us it was not his fault that there was no carbon monoxide detector and that there was a fault in the boiler that it does not shut off during hot weather. It was a very traumatic experience and it ruined our experience in Prague and the hospital bill really took a toll on our tight budget.