I stayed there twice this year.
The first time I had room 518, facing to the street with a nice, but very small desk. The other time I had get room 609, looking to the back. In this room, the bathroom was bigger, but the desk and the tea and coffee facilities were missing.
Bot thime I booked the cheapest room (77,00 EUR / 61,00 EUR) and I think were only upgraded the second time.
The parking is really small and as I had some problems leaving it, I normally park (if it is dry weather) at the other side of the Rhine, near the Hyatt Hotel and walked over the bridge (app. 5-10 min). There, you only have to pay 6,00 EUR / day and could reacht the motorways faster than from Cologne City.
I like the hotel, as it is very central and therefore not expensive. Also you have four free soft drinks and complimentary breakfast. But I have never get a newspaper at this hotel in the morning.