Hôtels Marriott à Cologne

The size of room and cleanliness is good and expected for a 5 star Marriot hotel. But very poor service staff and i can see very limited staff. The first receptionist i talk to was not so courteous or warm as we came early and decided to drop of our bags and go out till check in. The way she was communicating with us was with not so warm or good attitude. So we didn't say anything as she asked us to come 3pm though we arrived 9 am despite i am a Bonvoy elite member. After we checkin 3.30 pm we have to wait in lobby for 15 minutes to get back our bags and the next receptionist was no so warm also. I am not sure its my asian looks!! After checkin i asked for slippers and dental kits as both were not there and never they gave it despite saying they will send it..and again i went reception when we go out and come back and then receptionist said he will get it and i can carry it...never ever in my life of staying in a star rated hotel i was asked to carry slippers to my room instead of sending it to the room. So dissapoonted with Marriot Cologne. May be we expect more as we are pampered by the same hotel group in Gulf and Asia!!!