Cosy and quiet flat.
Trendy and animated area lot of restaurants and bars
Take the metro, cross Paris and you are at the eiffel tour, notre dame, Champs Elysées, just 30min away.
Very animated and trendy, lots of restaurants and bars.
I will give you some addresses !
You will be in the area of Place de la République, Bastille and Le Marais.
Subway line 3 Parmentier 2 min
Subway line 9 Saint Ambroise 5 min
Subway line 5 Obercampf 7 min (direct "Gare du Nord" easy if you take Eurostar, 10 min by metro)