I came for 3 days business trip to Frankfort, from the moment i received the room i saw that the mattress is old and sinks in the middle, the metal spring hits my back. I went to complain to the guy in the front desk, he came took pictures and send to manager and claim it will be fix tomorrow. Long story short,every day they came with different excuses,never replace, didn't refund my money.
The room wasn't clean, the staff didn't care about it. Don't waste your money staying in this hotel.
BTW,I called to Expedia customer service, they didn't do anything about it.