We thoroughly enjoyed our stay at Nathalie's apartment. The location was amazing with all you need for supplies close by and many sites within walking distance. Nathalie herself was quick to reply to queries and very helpful. We had one little issue with a missing light bulb in the toilet but this was resolved quickly.
As other reviews have stated, the place is quite small however well utilised and as we were out most of the time this wasn't an issue. I would recommend however, as Nathalie does, to travel as light as possible as the four flights of stairs with heavy luggage is not the easiest!