Really nice place to stay in! :) You will have everything from sheets and towels to great location and lovely balcony to eat your breakfast. Montparnasse tower is in 5 minutes walking distance as well as metro and other train stations. You can find different restaurants, creperies, pizza places etc close by. Also, Velib rentals are close by. We also had nice walks from the apartment to Hotel des Invalides and Eiffel tower. From the other side you will find the catacombes. Fits very well for 4 grown-ups :)
Thank you, Gerard! :)