Victor Hugo wrote Les Miserables there. Napoleon was a great admirer of the area. It has architecture dating back to the Middle Ages. Le Marais is another world hiding in plain sight in the middle of Paris. It's the place to get lost, pastry in hand of course.
The citizenM hotel next to Paris Gare de Lyon station is every mobile citizen's ideal landing pad (except for helicopters, sorry). Hovering artfully just steps from the station, it's an ultra-convenient location for your sightseeing, partying, meetings or, you know... just being in Paris.