Originally Posted by
tom tulpe
With that much luggage, I'd be tempted to get a room at the Mariott, the Sheraton, the Hilton or the Hilton Garden Inn at the terminal, if the price is not excessive, leave the luggage, and be free to explore.
Second that. I had a 20 hr connection in FRA recently and stayed at the Hilton. After dropping my bags in the room, I took the S-Bahn into Frankfurt. I have done Mainz before and loved the Gutenberg museum and the town overall is fun, but I would stay at the airport hotel. It’s really nice to be right there for a morning departure without having to rely on a train, especially with large bags.