We were lucky to get to stay in Enrica’s flat for 11 days! The balcony (open to each bedroom) overlooks the Place D’Aligre, where there is a farmer’s and vintage market Tues-Sunday (I think) and lots of cafes. Gare de Lyon station is close by, which makes metro travel easy by reducing transfers.
Her stocked kitchen, dishwasher and washing machine are available, very helpful. One sturdy key provided to guests, so plan to coordinate returns if you venture out separately and don’t leave the key in the apartment :)
We loved staying there.