I have just got back and didn’t notice any construction. The hotel was one of the quietest I have stayed in, in a city.

I didn't see the rooftop room so I can't answer directly but the staff at the hotel are very good at responding to emails. I'm sure they would be happy to answer your question - (and they all speak good English).

Yes you have water heater and cups in the room so you can make coffee. Anyway you have free coffee at reception any time.. :)

That question came up once when I was there. A guest had tried to get a mini fridge but one wasn't available so she ended up using the kitchen's refrigerator. You'll need to get a definite answer in writing direct from the hotel. Suggest you use the hotel's website contact email. I tried to put it here but TA wouldn't let me.

The only parking space we observed, was on the street. Suggest you check directly with Hotel des 3 Poussins for an accurate answer. And to ascertain what type of parking it is: street, metered street, private garage nearby, etc. It's in a very crowded, narrow, 'old city' area. The week-ends can feature a city wide outdoor party, where roving groups carouse to let off stream, and have fun. (White Nights) Might be fun to join them, but I'm not sure I'd want my car to be part of the "fun" because it is in the wrong place, at the wrong time. YMMV