"I was surprised at check in that we were told we had reserved 4 rooms. We did have 2 connecting rooms but my original booking that I had cancelled well in advance on Expedia never showed up on Hilton Heidelbergs end. I had to prove I had cancelled and had to forward emails to show that I did indeed cancel the first connecting rooms. Once that was fixed, the rest of the stay was ok. "
"Good sized room in a good location. Only one elevator was working which resulted in some lengthy delays getting to and from the upper levels. More than once during my two week stay I was left with 2 hand towels and no bath towel.
Otherwise the stay was great. There's free travel on the Mannheim public transport included it you join their rewards program."