We are planning to be in Frankfurt for 2 or 3 nights, and have 4 children under 12. Where would you suggest we go for night? We're not fancy, but we'd like it to be clean and safe. Thanks in advance!
With 4 kids, you might want to go to the Jugendherberge on the Sachsenhausen side of the river in Frankfurt. They should have a room for 6, and it includes breakfast.
https://www.jugendherberge-frankfurt.de/en/sleeping/families