Is it possible not to find any parking spot in the parking of the hotel? If so, can we reserve a spot prior to arriving to the hotel? or is there any alternative parking nearby?
Thera are plenty of parking place there.
The hotel offers a parking garage for 10€/day and also you can park on the street but thats more expensive!
You can park your car for a small free in the hotel's indoor car park or public car park nearby. For reservation, you can call or email to hotel for further reservation and query.
I suggest you shall call to hotel's reception and reserve slot for your car.
Get an answer from Ibis Frankfurt Centrum staff and past guests.