Light: Stromanthe plants enjoy medium indirect light. A room a window will do fine, but brighter rooms will let it thrive and grow faster.
Water: Watering once a week is usually fine. Press your finger about an inch into the soil and if it is dry, it is time to water. It it is damp it can wait a few days.
Soil: Well-draining potting mix will let your Stromanthe plant.
Humidity: Average humidity in a house is perfectly fine.