We booked and paid 4 days because we expected to get the usual Hilton-service level as we had in the past in other cities. The reception staff and the welcome were ok but not really want we expected. The worse experience was in the Hotel bar: we waited 15 minutes and nobody took an order, after this wasted time we asked twice the bartender and he shouted "you need to take your orders with somebody else, I am not in charge for your table". This is a civil servant mentality and not the behaviour of a 4 star staff member.
Location of the Hotel is not really in the center, so you need everytime a taxy to get in and out.
The wellness-area is not up to date, smells bad and the 2 saunas are not worth to enter.
Positive is the breakfast and the rooms (even though there is no ventilation in the bathroom).