This apartment is ideal for exploring central Paris. Despite being so central it is very quiet and peaceful overlooking a small courtyard and great to come back to after a busy day sightseeing. We loved the fact that we were only 10 minutes walk from the Eiffel Tower and visited it several times during our stay - it is worth seeing it at night when the lights all twinkle too!
We saw a lot of sights by foot, but did buy a Mobilis ticket (7.50 euros for a day's travel) to allow us to explore slightly future afield.
I was staying with my daughter and the apartment suited us well. It might feel a little cramped for four, but it was homely and convenient with several shops, cafes and bars only a few minutes walk away. Definitely worth a visit!