Location was good, just 5-7 mins walk away from Frankfurt main. Store and food around the area. Hotel is clean and check in was seamless. However I was shocked just first day after checking in, I was doing my business in the toilet, suddenly I heard lot of noise. I opened the door and see the cleaning lady vacuum my room, which the door was locked. This happened twice, on the next day as well. Maybe it’s a difference in culture.