We have just stayed for 2 nights in the apartment. (3 siblings all in our 40s).
Wow - what a find! It’s SUPER convenient to Gare du Nord (about a one minute walk). Because of the location we thought there might be noise issues at night but it was well insulated from sound outside.
The apartment has been thoughtfully decorated and we really loved it. The double bedroom was very comfortable with its en suite shower. The bunk bedroom had a low to the ground mattress which was very firm (perfect for us) and the hosts had kindly put a single bed in the cot room meaning we each had our own space. The apartment was really warm and welcoming and had everything we needed for a weekend break.
Check-in and out was easy and the hosts were very friendly and helpful.
We would all highly recommend it (and would love to come back!)