The flat apartment Karine and her flatmates is located in a really good region of Paris. We've been there to visit a festival in a park close by (Parc de la Villette) and we could walk there, what we absolutely enjoyed.
The room itself is also cosy and clean. We were allowed to use the kitchen which made us feel a little bit like home.
There is also an extra-point to mention: a friend of us had a flight delay and couldn't reach his apartment without missing too much from the festival. Karine was super helpful with us and he could leave his luggage in our flat. Thank you for that again!
As far as transport is concerned - the metro and a bus is directly in front of the building. So everything was easy to reach.
All in all I can absolutely recommend Karine's flat!