Nobody likes the cold feeling that tiles give. The first thing that you must do is to add a small rug. Naked floors are a huge no in winter. Add a rug to cozy up the space. Your feet will feel lot warmer!
Next thing you need to do is to make the seating area warm. And you can do that by adding some soft cushions for sitting. Add a few throw pillows for additional comfort. Also, add a warm blanket in case you or your guests are cold.