First of all, Nicole is a great host: she responded to all my questions and kindly left an iron in the apartment when I asked. Then, I was allowed to arrive on Saturday morning as I had an early bus. During our stay Nicole was always ready to help though she was out of the city. I felt really welcomed in Paris.
As for the flat, it is quite small but perfectly planned and equipped with everything you need for a short stay. The shower is very clean and totally functional. The room itself is cosy and nicely furnished. Wi-fi now is fast and stable. Besides, this apartment is situated just near the underground station and in 10-15 minutes walk from Arc de Triomphe. I'd definitely recommend this apartment to everyone visiting Paris.