Where is the best location to put temperature reader inside a room?

The best place to put a temperature is in a shady spot on a Windowsill. The truth is, there is no "Best Spot" many people prefer head level, so that the reading would be more "accurate" but the best place typically differs on a person's opinion. However, if the temperature unit is to be used for an air conditioner, or other system. The "best spot" is typically dictated by the manufacturer.