Ritter Hotel 

My friends and I booked two rooms at Ritter hotel in January as we were only staying in Frankfurt for one night, we got to the hotel and the owners were really lovely and we checked in straight away. The rooms aren't the most up to date but they were clean so it was fine - they asked if we wanted a quiet room but we were there to go out that night so opted for a normal room but warning - it's very loud outside!! This didn't bother us though because we came back at 4am and just fell asleep straight away... The shower wasn't great, it did flood the floor and it seemed like the drain needed cleared out unfortunately. The beds were comfy enough although in the 3 person room, one bed is basically a camping bed. The bar downstairs to the left of the hotel is great - they played rock music all night with 1 euro tequila shots, unreal!! Would definitely recommend that bar and staying at the Ritter Hotel is you're in Frankfurt for a drinking holiday! The hotel is a short walk from Frankfurt sud station where you can hop on a train to Haupbanhof where the main city is - note, if there is a group of 5 or more buy a group train ticket - it's so much cheaper! The staff were super helpful, I left my Nintendo Switch in the hotel and contacted them later about it - they posted it back home to Ireland for me which was great!! I doubt I'll be back in Frankfurt but I'd probably stay here again if I did return!