We traveled as a family of 4 with 2 children aged 8 and 12 and found it easy enough to get to the appartment using the train and metro from the airport.
The metro station, Rue St- Maur, nearest the appartment is literally just around the corner about a 5 minute walk which meant traveling into the centre was easy and took about 20 minutes. Being just a little further out of the centre was great as the food and local reasurants were a bit cheaper. The area itself is chilled and being a local suburb it was nice to come back to after a busy day site seeing. It was nice to eat out and relax in the local restaurants with the locals in the evening at a slightly slower pace.
We bought the hop on hop off bus tour tickets to see the main sites which avoided winging about tired feet from the children. Be aware that the queues for the main museums and the Efile tower are very long as you would expect and take this into consideration before planning your day.
I have to say it but a certain fast food restaurant comes into it's own when traveling in big cities as a family for well priced cool drinks, toilets and air conditioning if you need to cool down. We bought local produce and ate picnics during the day. Obviously eating at lunch time is cheaper than buying dinner in the evening if you want to eat out. As a family on a budget buying local produce saved slot of money.
Talking of buying local there are lovely bakeries, café 's and restaurants near the appartment. As it is an area used by locals there is something to suit most people, from restaurants to smaller outlets selling crepes and more snack type food and a few does down is a Lidl where you can buy basics without breaking the bank.
The apartment itself is really clean and well set out. It felt spacious even with 4 of us. It is modern and comfortable with all the amenities you require. It is part of an old artisan/ craft building with a lovely courtyard entrance to the building. It is a lovely flat in nice area with a relaxed vibe and a sense of history you wouldn't get from a hotel. Great for a family or couple.
Jean-Baptist was really helpful and prompt when we needed to communicate. We were 2.5 hours later than expected due to a delay with our flight. Thanks to Marion who waited for us to let us in and showed us around the flat. Communication was good which made the delay less stressful. Great hosting.
Overall well recommended for somewhere authenticate to stay for a visit to Paris.