Unfortunately it has worsened.

Unfortunately it has worsened.
Since our last stay in 2015, the smoking lounge has been abolished for incomprehensible reasons. We enjoyed drinking a cocktail or two there in the evening. The friendliness of the staff has also declined a bit - you cannot generalize, as there were some very dedicated employees.
Breakfast should not be booked, for the price the offer is rather poor.
The next time we stay in Berlin we will choose another hotel.