A bit small, but do-able. What really counts is the number of bedrooms and bathrooms. It would be best to have an extra half bath available.
That used to be the standard family house. A lot of space in larger houses is rarely used.
Not at all. 1,200 sq feet is a nice size for a three bed apartment and more than adequate for four people.
Yes, but if it has 4 bedrooms and 2 bathrooms then it's not bad.
Yes, the ideal size for 4 people would be 2000-2500 sq. ft
for 4 people to live in