What is the difference between airport hotels and transit hotels?
For years, I always got the idea that airport hotels are hotels that are located within the airport vicinity (for easy accessibility to/from airport), while transit hotels are hotels are located within the airside zone of the airport, meaning you can walk off the airplane to that hotel until your next departure without the need of passing passport control.
Now I start to have doubts that what I always understood about this is wrong, should I correct my information or not? in other words, can I safely assume that any transit hotel is a hotel located airside by default?