The apartment is clean and big enough for 4 people. I guess it would be perfect for familys. The kitchen is well equipped and you have a big kitchentable for meals and games in the evening.
You can get to San Marco within 15-20 minutes per pedis. You have a grocery store nearby and many good restaurants. And I guess, when you ask Luna she will tell you where to find good restaurants. Luna recommended nice places Venice and told us were we can find big arts.
Luna is a great host and the apartment is friendly and clean.