When I've gone away for 2-3 weeks at a time I've left some water in the bottom of the plant container/tray and have left them on my living room floor - the room faces East. However I have left the curtains partially open so the plants get some light. I still have the plants after 8 years. In the case of my peace lily over time it is now been divided into 8 plants.
The amount of water you leave depends on the temperature. If it's hot you leave more but if it's cold you leave little. Once you come back if there is any water left you must throw it away.
When I've gone away for 2-3 weeks at a time I've left some water in the bottom of the plant container/tray and have left them on my living room floor - the room faces East. However I have left the curtains partially open so the plants get some light. I still have the plants after 8 years. In the case of my peace lily over time it is now been divided into 8 plants.
The amount of water you leave depends on the temperature. If it's hot you leave more but if it's cold you leave little. Once you come back if there is any water left you must throw it away.