Sam's place worked well for our stay in Paris. We had three guests total and there was just enough space for us all. The place was cute and had a great view. It's not close to any of the Paris sights (except Sacre Coeur), but is only a two minute walk to the nearest Metro, which will easily get you where you need to go.
One thing to note is that the shower quickly runs out of hot water (not a huge deal, I know), and that the washing machine made all our clothes smell quite bad. Other than that, we had a great stay.