Hotel would have been okay, but the listing is misleading. It SAID that there was air conditioning. I went down to reception, and the attendant said that NONE of their rooms had air conditioning.
It was a busy time in Frankfurt, so we could not find another place if we were to get refunded, so we stuck it out.
It was miserable. They threw us on the fourth floor (stairs, no elevator), which was MUCH hotter than outside. We left the windows open. It started raining. The rain came into the room through the window, but we NEEDED to keep the window open because it was so miserably sticky and hot. I felt like I was suffocating, and could never fall asleep.
Don't say you have air conditioning if you don't. I was SPECIFICALLY searching for hotels with air conditioning because I KNEW it would be hot out. I chose this hotel under the false message that it had air conditioning.
Refund me, fix your listing, and i'll change my review.