Mistletoe cactus come in many different shapes and colours. Although they are called a cactus they are not your typical kind as they originate from the jungles of Argentina and Brazil where its shady, damp and warm and are an 'epiphyte' meaning they grow on the trunks and stems of other trees.
A bright position indoors out of direct sunlight.
For happy Mistletoe cactus, replicating the damp, jungly conditions they are used to is ideal. Don't let them dry out as their leaves can become quite stressed and often hard to recover. Ensure pot is free draining and not sitting with water in the tray.