I will not stay here again. The shower did not drain so it created a lake of water. That means that they are not cleaning the disgusting stuff from the drain regularly. I told the front desk of this in the morning. The next day... again, overflowing. No action was taken. When I again complained, the reaction was that "I told the maintenance staff of this issue". No apology, no nothing. Just a bad attitude. In addition, the breakfast service was also very much 4/10 experience due to the service, despite being ridiculously priced at 27 euros. I had to ask to have the table wiped because it was cleared but not cleaned, for example.
To be honest... this is just not acceptable attitude and service so I will take my money elsewhere since I travel very regularly to Hamburg.