Location: very central with brasseries, cafes on the same street, nice bakery and a super market and more brasseries around the corner about 5-10 min walk from Erik's house entrance door. The Eiffel tower can actually be seen from the street around the corner! The tower itself is 15-20 min walk from the house and the palace of Invalides is 10 min walk.
The area is very lovely and doesn't feel touristy - though tourists are everywhere - this is Paris after all :)
There is a metro station less than 10 min walk from the house and RER (regional train) station Invalides about 15 min walk from the house - this one is very convenient when coming from/leaving to the airport.
Apartment: small but very clean and surprisingly felt spacious - maybe because of large windows. It was enough for the three of us. Sleeping on the sofa-bed and the sofa-chair was actually comfortable for a sofa-bed. The kitchen is small but adequate to cook breakfast. The bathroom is small but clean and cosy.
Overall a nice apartment for max 3 people close to major sightseeing attractions with lots of Parisian cafes nearby in a neighbourhood that feels very Parisian.