Graduate student housing is okay. There are some apartments that are really well kept up, and others that aren't. They are very small though, especially if you have a family. Though I've seen families with 2-3 kids live in the two bedroom apartments so it's still doable. There is usually a pretty long waiting list for the apartments though, and I believe priority is given to grad students with families. There are some great apartments off campus so I would recommend looking into that. I would look in the Willy Street area or in the Monroe st area if you are looking to get away from undergrads!