We had a great time staying in Sylvie's beautiful apartment in Nation. The neighborhood of a Nation was excellent - everything you need. We visited a the patisserie everyday, and there was a good supermarket and many cafés/restaurants nearby. The metro and RER were also close by.
The apartment itself suited us, our 3 yo son and our parents. It had everything we need - a great kitchen, comfy beds, including a mattress and blankets for our child.
Sylvie met us, showed us around and if we had any questions during our week stay she quickly responded by SMS. We would definitely stay again.