We are a family of 5 (. 3 big kids ) and loved the space of Giuseppe's place.
The out door terraces were fab .. especially in the hot city.
Mergellina is a buzzing area with lots of nice restaurants and local shops ... the mozzarella shop across road had most delicious buffalo mozzarella w shave ever tasted ..
Yes there are stairs up to the apartment but worth the walk for the views of the city .