Hi, I'm posting here out of desperation that someone might be able to help me!

In July I'm going to the South of France with my family and my sister in law and her family. We will be staying at a caravan park for almost 3 weeks but leaving on a Friday with the intention of going to Salou for a few days (flight leaves Barcelona on the Monday) and to take the kids to Port Aventura.

I need accommodation for 3 nights and it's no problem for my family of 4 but ideally we want to stay at the same place as my in laws. Herein lies the problem. She has a family of 5 and everywhere I've looked on the Internet where they can accommodate 3 children the minimum stay is 7 nights, the likes of camping and caravan parks, hotels and apartments seem to only cater for 4 people.

Surely someone must have stayed somewhere in the area with a family of 5?