I would definitely recommend Annalisa's apartment. It is ideal when travelling with kids. Very neat, a lot of space, comfort, lots of light and air conditioning in both bedrooms + living room. City center is only 15 minutes away with metro M3 (and also very easily and quickly reachable from the central station).
The street can be noisy early in the morning but since you can close the windows and use the air conditioning it's not a problem at all. The building itself is nice.