Near the airport there are several hotels where you can stay if your flight leaves early or arrives late.
If you intend to visit Frankfurt our advice is to not use anyway Hahn as a basis for the move, since the city is quite remote.
To book Hotels in Frankfurt you can visit the following page:
Some Hotels suggested:
Only 800 meters from Hahn this charming 4 star hotel offers style, free wifi internet access and a shuttle service to and from the airport.
The Landhotel Airport-Inn offers a complimentary airport shuttle 24 hours on 24 and breakfast starting at 04:15 onwards. And 'perfect for those looking for peaceful accommodation near Hahn.