Like Bradtort said, it can be done and successfully.
I have 1.3 in a 2x6 box that I made for their temporary enclosure, while I'm making their outside enclosure.
Just as for all tortoises, they need a good UVB light and a heat source when kept inside.
I like to keep their basking area at about 90 degrees(done with a 100watt ceramic heat emitter), and the cooler portion where they sleep is covered like a cave, and it is about 65 degrees at night.
A small source of water should be provided(that they can't drown in). Their water should be changed when it get's dirty, which will happen quite frequently, sometimes everyday.
They can be fun pets, especially when they recognize you as the "foodbringer".
My torts like romaine lettuce, dandelions, sowthistle, mulberry leaves, rose petals, mustard greens, carrots, and assorted weeds that grow in the yard. They *love* petunia and hibiscus flowers. The key thing with diet is to feed foods that are high in calcium/fiber/nutrients, and low in phosphorus/oxalic acid/protein. Variety in their diet is important too. I don't have access to grape leaves but they are supposed to be good.
here's a cool link to some tortoise foods and nutrient analysis:
Link