Quiet? Compared to a lot of hotels, yes. There is room for improvement, with thicker walls. The cleaning staff worked quietly. Considering the location, there was less noise than I expected and I could get good sleep despite being sensitive to sound.
Darkness at night? Enough. I am sensitive to light when I should sleep. They could have better curtains and TVs without standby lights but compared to most hotels it was fine.
Breakfast? The breakfast was quite basic, but it had everything necessary for a good start to the day and it was quite tasty. Unfortunately you have to get up early because breakfast enda at 10.
Cleaning? No complaints! It was clean.
Bed? Comfortable.
Expensive? Yes, but worth it.