Great hotel. Very modern, good size rooms, great location - walking distance to central station, also close to several transit stations. Room wasn't huge but a good size, very nice washroom.
Lobby had a foosball table and some games, my kids made use of that space - especially as a cool down area during the heat wave.
Really good breakfast, lots of options (both hot and cold food). Also lots of seating, we could always find a spot even during peak periods.
Excellent option for exploring Hamburg!