We took the train at 7am from Milan!
It is not the first time I go to nice, in fact my brother lives here a few years. This means that I will make a list of significant places to visit (which you can find in all the guides) and I will elaborate more on the habits my brother took and the places a resident visits.
So let's start from the beginning.
First of all, a walk on the Avenue Jean Medecin is mandatory until you reach Place Masséna. This is beautiful both day and night. From here you can continue either in the Promenade du Paillon Park or along the Pronenade des Anglais. In any case, both are to be done. In particular, the beauty of the plants is to be noted in the Park!
If instead you take the second road again, a crossroads (both to follow!): The first is a climb up the Parco Colline du Château hill, nothing hard and leads to a beautiful view; the second route continues instead to Monuments aux morts: from here you have an incredible sea view!
Another important area to see in my opinion is the old city also this day and night, especially for the evening is full of restaurants and to try is the typical Socca (for us Italians is "simply" a farinata). By day there is the flower market instead
Ah if you hear a cannon shoot don't worry, at noon you shoot!