"I stayed at Novotel for 3 weeks whilst I was working in Karlsruhe. It's very well located near the theatre, the shopping mall and easy to walk into the town. The hotel is very clean and staff very helpful. It's a corporate style hotel, so very clean and functional.
I don't think this would be relevant if one is there for a short stay, but for the longer 3 week stay it became difficult as the housekeeping time window is any time up to 3pm, so trying to plan my day around being out of the room for house keeping, was difficult and unpredictable. And their consistency on what they refilled (tissues, bathroom supplies, minibar, coffee etc) and clean sheets was also not consistent and I had to ask for things various times over the three weeks, that I felt should have been automatically attended to every day.
However this is a small point as overall it's a very reliable and excellent hotel. And highest praise for how quiet it was!!"