“I am rating 1 star because 0 star is not an option.I am an Executive Assistant in a company with 500+ employees. I made a group booking in the "AC Hotel by Marriott Berlin Humboldthain Park" hotel for last night; there were 9 people from our company in the hotel.One of them (who of course happens to be our CEO...) had a disastrous experience there.When he arrived and asked for his room at 4 pm (usual check-in time is at 3 pm), they told him the room was not cleaned yet but that it'll be ready for when he would come back in the evening. After our Berlin team party, he came back around 2 am then they gave him the key to a room already occupied by someone! He had then to leave and go to another hotel because the hotel was fully booked.He saw this morning that they had sent him an email past 11 pm last night to tell him they made a technical error, and that he needed to go to Precise Tale hotel instead. An email? At 23.00? Who check their emails at that time?The rest of the group was ok even if they had single beds while I booked super large beds for everyone (and paid for that type of rooms too)...For a hotel that claims to be under the Marriott brand, this is a disgrace. This is a rip-off, and I would not recommend anyone to book a room there, especially during the summer holidays period.If Marriott/the hotel have any decency/honor, they will contact us to do something and offer to refund us the price of his night in the other hotel.In any case, this hotel is a hard pass for us.”

“I rarely write a bad review but we came in June and it was hot and the hotel AC was very bad. Thankfully the windows opened or it would have been totally unbearable. Management was of no help. They didn't give us free breakfast even though we are platinum elite. This is not your standard Marriott.Rooms were mostly clean but not great. Food was good in the restaurant though, both breakfast and dinner.”