Cologne seems to be a very interesting city with a marvelous cathedral. However I had a guide not that good, apparently inexperienced, that converted tour in a complicated experience. He did not provide any information about city, did not include restroom break on the journey, prioritized bus citysighseing instead of going directly to cathedral could not see it entirely, was closing, could not find easily hotel booked for part of tour guests, completely forgot to give our lunch sandwiches remembered at 16:30, after visiting cathedral asked what we would like to see in Cologne instead of giving us a tour around city I was expecting guide to tell me what to see, but we didn't see much. Finally on way back he got stuck and blocked on the road due to a car crash and because of this we could not visit Limburg as scheduled and tour ended one hour delayed OK, not his fault but ruined tour.