Whether a SEAT Arona KJ 1.0 TSI Reference is a good family car, is not easy to answer from a technical point of view. families have a wide range of requirements, so this consideration only considers the common aspects.
The SEAT Arona has 5 seats, which is enough for many families, and also brings a decent trunk with 1280 liters of volume, in which there is still room for luggage even with a stroller loaded. Good conditions for a family car. There are no Isofix brackets installed. These could be used to secure child seats easily and safely.