There are a lot of different options from bigger "motels" to cute little Inns. Its all going to depend on what you are looking for. This is where we stay... Fourgables.com in either the hemingway or hollyhock. I have stayed many places though so sorry for the questions just want to help you as best as I can!
to follow up on PP you also have to think about what type of family atmosphere you are looking for in P-town i.e., are you looking for a place that's kid friendly, or adults only?