You have the entire space where you can use sofa beds with round coffee tables. A corner TV stand with place for DVD players and other entertainment equipment would make it look majestic. You can get a carpet for the floor and the carpet need not be very costly. If you have children who go to schools or if you want to keep some space only for you so that you can work, you can even get a plywood partition at the cost of peanuts. To sum up, you have plenty of options to remodel a mobile house.