PS Clothes irons are very different from hair irons; in hair irons the hot part can't lay flat onto any surface, and really never touch any surface at all. An iron left on could tip and lay flat on carpet or bedding, whereas a hair straightener's hot surfaces don't touch even the counter they are sitting on. Make sense?
Straighteners get very hot and can make the surface hot too! You have to make sure it's a surface that won't burn. Most irons have an automatic shut off but my straightener does not. My daughter tends to leave hers on so every single day I double check to make sure it is off & unplugged. There is only one outlet in the stateroom so the iron isn't going very far away from the counter or is anything else that plugs in. My iron would never get close to the bed since the cord isn't that long.