My room is the 19th district, in north of Paris. You'll be very close to the ourcq Canal witch is the best place in Paris to chill. You have also one of the most nicest park close to it, les buttes chaumont, on the same hill than Belleville. Near Montmartre and Sacré Coeur as well (15minutes).
Easy access to all the services and transport to the center, subway line 7 (Corentin Carioux or Crimée)