We were two families travelling with infants and the flat totally fulfilled our needs. It was spacious and very cosy at the same time. The two main bedrooms are huge. The terrace is lovely. The daily visits of the cleaning lady is a great bonus.
The location is great, it's a comfortable walk to the center. Takes about 20-25 minutes with the strollers. At the end of a tiring day with kids, you can also just hop on the metro and get to the house within minutes. Also walking distance from the house there are great bars and restaurants.
We would definitely come back and stay here again.