Our recent stay at the hotel was okay. Despite booking through Hotels.com, we were allowed a late check-in. I don't know if this is on Hotels.com or misinformation from the hotel to Hotels.com, but it did say check-in to 20:00 when in fact it ended at 18:00.
The comfort of the room was below average. The beds weren't super comfortable, primarily because they had no mattress pad/topper.
The cleaning standards were fine. The room and bathroom were reasonably clean, and we didn't notice much. Only that the interior felt outdated, and somewhat worn out.
The service provided by the staff was great. We didn't interact much with the staff, as we had no real concerns, nor did we stay much at the hotel.
The hotel's location was reasonably situated for our purpose of visiting Tropical Island. However, it was quite far from Berlin's city center; something that anyone who wants to visit Berlin and its main attractions should keep in mind. But other than being far from the city center, you had most things you'd need within a few minutes, as the hotel is situated in a small square with several options for shopping. Also, the hotel is situated inside a small shopping mall, with a kino (I think), a few restaurants, and a few bars.
The situation with the bars might be a deal-breaker for some, as the sound from the bars could easily be heard from the rooms if the windows were open, which was almost a must considering the rooms got quite hot during the night, and no AC was available.