I loved the location of the apartment. We were close to a lot of necessities, to the Metro, and we could walk to the Seine in a few minutes. We walked to the Louvre which took about 45 minutes and we got to see and enjoy the Paris sights along the way.
The only issue that may bother some was the street noise. I wasn't bothered by it but if you aren't used to living in a big city, just be aware.
We loved our stay there!