This was my second stay at this apartment and it was, once again, spectacular.
The location is terrific. If weather is bad, or we are simply feeling lazy or tired, the entrance to the Metro Line 9 is incredibly close to the apartment. But we were also able to walk easily to the 1, 2, 6, and RER C.
The location manages to be near a lot, but not over-crowded (I stayed there in winter). Ilena, sandwiched between Alma and Trocadero is not overrun with people because the apartment is a block away from a lot, but not a lot is actually on the street.
We were able to hit the nearby street market for lunch on Wednesdays and Saturdays and easily able to get to anywhere else we wanted to go.
The apartment is small, but not tiny, and my son and I were able to stay there together comfortably for a 2-week stay without driving one another insane. Everything was well-maintained and clean and functional. It was a great base for us to explore the city.