This flat in Paris is small but definitely spacious enough for our family of five. There was a room air conditioner that worked well so we stayed cool in July. The kitchen is modern and has the necessary cookware for making dinner for a family. The inside of the building and the stairs are really old and cool looking. Arno is very helpful and gave us great recommendations for local restaurants!
We felt safe in the area during the day. If you intend to be out at night, it may be less safe. It was fine for our family.
The flat is close to several Metro stations and all of the main Paris attractions are either within walking distance or a short Metro ride away.