Jihua was not able to meet us personally but his aunt apparently lives next door to the flat. She doesn't speak English but still was very helpful in terms of meeting us, showing the space, and also going an extra mile helping us to transform the sofa into a bed (a bit difficult for an inexperienced), and even allowed us to use her washing machine for our clothes (as there is none in the flat).
The flat is a studio the size of a hotel room, we stayed with 2 kids and felt prettying comfortable. The location is pretty convenient, the bus 72 across the river (10/15 min walk) will take you to pretty much all the Parisian sightseeing places (everything what's located along the river). Eiffel Tower and Champ de Mars are 10-15 min walk away.