Firstadvice I can give is make sure you wake up every 3-4 hours to let them relieve themselves. Keep the time consistant. When they do it outside, praise them. Dogs don't remember more than 13 mins or so (different from place oriented) hence, scolding them for something they did hours before just won't work.

Second is find an area where the floor is easily cleanable. Buy a baby-gate to block off the entrance. You can find them at walmart for around $15.

Thirdly, get a steam carpet cleaner. Also, there are specific soaps that work with steam machines that specially formulated for pets.