I booked Hotel Union because I had an early international flight from Istanbul Airport, and on Google Maps, Hotel Union is inside the airport.There are cheaper hotels in the town of Arnavutkoy, 10 Km distant by car, but I thought it was worth paying extra to be near checkin. I looked for the hotel in the airport. I couldn't find it. I called the hotel, they sent a shuttle, and it took me to The Great Airport Hotel, in Arnavutkoy.
So I had to leave this hotel at 04:00.
The Great Hotel is brand new. But my room had a dangerous appliance - a kettle where the steam leaks into the handle.