Calatheas thrive in medium, indirect sunlight but tolerate lower light levels too. Bright direct sunlight can cause the stunning colours on their leaves to fade, with prolonged exposure likely to burn and scorch their leaves.
Calathea like to have moist soil or planting substances, but not soggy. They do not want lots of water, as it can drown them. When you water a Calathea plant, do not water it so much that the plant ends up sitting in standing water. 
All our plants come in a standard plastic container (decorative planters and pots are not included)