My main complaint is that the room was VERY hot and not equipped with any temperature control. Sleeping with the window opened was not possible because the area is lively (so noisy). On the other habd the hotel is located within walking distance from many restaurants, the cathedral...
The room was otherwise nice, not the cleanest but I did not mind. The bed was comfortable enough.
The bathroom is rather small, its cleanliness leaves something to be desired in places. The shower door had traces of mould, the drain was clogged and the towel rail was quite dusty.
The breakfast is great though: loads of different breads, food, drinks (even vegetable milk), fruits, etc.
Overall I had a decent stay, maybe it is just me but I would expect more from a 4-star hotel.