We stayed at Karola's apartment for five days and nights. The place is comfortable and clean. Perfect for a short stay in Paris. The apartment is on a corner on the fourth floor, so you get to see the goings on below on the small but busy rue de Poteau. There is an elevator in the building which was very helpful since I was traveling with my elderly parents. The street itself has a number of great places to buy delicious food ready made, including a at least three bakeries and two supermarkets. The subway is a stone throw away and the Line 12 is very convenient for getting to many of the major sights with at most one line switch.
Karola is a very friendly host. We interacted mostly in Spanish, which she speaks fluently. She made sure to answer all our questions. All in all, a wonderful time in Paris.