This apartment is right in the heart of the action of the Canal St Martin / Oberkampf neighborhood. Worth the climb up 4 flights: Bright & airy apartment, your bedroom with street view, king sized bed & closet, & friendly English/Spanish/French speaking local (her bedroom on the opposite side of the flat & she works weekdays). The bed takes up alot of the room, but you'll enjoy hanging out in the living room & if the stairs aren't enough there is even a treadmill & stationary bike, just ask!
Half a block up from Canal St Martin, lots of restaurants, bars and shops right here, and easy access to the Seine (10 minutes metro or 30 minutes walking)
Metro République (5 minutes walk) has access to 5 lines that go all over the city: 3, 5, 9, 8, 9, 11. Metro stop Goncourt is on the corner.