When deciding on where to place the plant in your home, it helps to understand the window and light environment. East facing windows receive cool morning sun and are good choices for most houseplants. However, in the winter east windows receive more sun light than they do the rest of the year. This would be my pick for the Christmas cactus. North facing windows receive almost no direct sunlight.
North windows are a great choice for houseplants that thrive on indirect light.
The cyclamen, a popular Christmas plant, would love this window, as would the Peace Lily, Chinese evergreen or pothos ivy. South facing windows receive a lot of sunlight in the winter, but less in the summer. Special care may be needed when using south facing windows or you simply may need to move the plant in the summer. Poinsettias will look good for a couple more months in this location. West facing windows receive the most sunlight of all.