We arrived late in Paris after a full day train. A quick and easy ride to Dupleix station, and a short 10 minute walk from there, we found ourselves greeted by our host and shown to the apartment (due to the clear instructions we were provided).
Due to our late arrival our host had provided us with some sandwiches and juice in the fridge, a thoughtful and very welcome touch. He proceed to show us through the apartment, which some may find small, but in reality is a fantastic space which is large enough for you to come back to after a day of sightseeing and shower/sleep/eat a small meal. The small back courtyard area was also a nice space for breakfast or a coffee in the morning.
There is a well priced grocery store only a short walk away from the apartment, as well as well priced (for Paris) restaurants around the area. The Eiffel Tower is only a 10 - 15 minute walk, and of course Dupleix station means it's easy to get trains further to other popular sights, or connecting trains to the airport when leaving or further afield.
For a central location in a major city such as Paris, the apartment was very well priced, and I would recommend staying here if you are lucky enough to find the apartment available on the dates you need (which understandably seems to be difficult)!