Fantastic option for an overnight connection at Frankfurt airport. Both Sheraton and Marriot are connected via sky walk to Terminal 1, a 10 minute indoor walk. We, a family of 4, came in around 20:30, had a fast check-in, got a "family room" that slept 4 of us extremely comfortably. The family room really turned out to be two rooms connected via a door, which worked great for us. We got dinner at the hotel, which was good quality, and service was fast. Our flight was at 10:45, so we got to sleep in. Complimentary waters, espresso, all added to the comfort. Worth every penny.