We were only in Istanbul for a 36 hour layover. Hays Suites was a great place to stay to see all of the sites. The concierge desk is extremely helpful and even called a cab for us to get back to the airport. Highly recommend. I think it’s noted in the listing, but keep in mind that there isn’t an elevator and the stairs are quite steep. We didn’t mind, especially for the value, but important to know if you have a hard time walking up.