Peace Lily is one of the easiest and most common houseplants to grow because they thrive in low light conditions which makes it perfect for beginners and for every house. Originally from Asia, they have conquered almost every space around the world for being one of the easiest houseplants with flowers to take care of.
Peace Lily tolerates low light but prefers moderate to bright light. Direct sunlight, however, will burn its delicate leaves if exposed for a long time. Meaning that north-facing windows are great for Peace Lily but their growth will be slowed down because of the low-light conditions.
Peace Lily likes to drink a lot of water and it will tell you when it's thirsty because its leaves will droop a bit. If you don't want to let your plant be in the limit, make sure to water it every time the 2 top inches are dry.
As a more concrete indication, if your Peace Lily is placed in a north-facing window or in low-light conditions you must water it around once per week even though you can make sure to check the humidity of the soil with the finger method (deep your finger into the soil).