Location is in the 9th and it is near to metro stations (in between Trinité d'Estienne d'Orves and Notre Dame de Lorrette) so accessible to the whole city easily. We walked a lot from the apartment too - about 20 mins to the Louvre etc...
Apartment is very bright and airy which was lovely in the unusually warm April weather we had during our stay. Some elements of the apartment furnishings are a little tired / broken which I documented when we arrived as there was a steep 800 Euro security deposit which I didn't want to be charged for existing damage.
Despite this the flat is a perfect bolt hold for exploring Paris and I would recommend for the location alone.