A transit hotel is a special kind of hotel that's located inside an airport or very nearby it. It's a place where travelers can stay overnight or for a few hours when they have a layover, which is when you have to wait for your next flight.
When you're traveling somewhere far away and need to change airplanes, sometimes you have to wait a long time before your next flight. This can be tiring and uncomfortable, especially if you're tired or hungry. A transit hotel makes it easier for you to relax and rest during this waiting time by providing a place for you to sleep, take a shower, eat, and rest.
The hotels are very close to the airport, so you don't have to worry about getting lost or missing your next flight. They also have special features that regular hotels might not have, like soundproof windows to keep out the noise of planes taking off and landing, and blackout curtains to help you sleep even during the day.
Transit hotels are a convenient way to make your layover more comfortable, and they help you feel refreshed and ready for your next flight.