It is/was a nice, beautiful and pleasant hotel. We were a party of 6, divided up in 2 superior rooms at different floors and because of security measures, we couldn't visit each other. There weren't 3 beds per room as booked but 2 beds and a sleeping couch. There's free Wi-Fi available but at room 136 where we stayed, there wasn't any viable signal and the Wi-Fi should be protected with a password, with guest access only.
We didn't had breakfast at the hotel. €23,= euro per person, per day, is to much for what you consume in the morning.
Parking in the garage is €15,= euro per day, that should be free for guests. You can park outside but there weren't much parking spaces available.
Besides all that, we had a great 2 day stay.
For what you have to pay, I recommend this hotel. It's nearby the airport, you have nearby shops and the city center of Cologne is a quarters drive away