Sun: Rhaphidophora Decursiva's do best in bright and medium indirect sunlight - a room with a window will do just fine. They can not usually handle direct sun as the leaves will let you know if they got too much sun by turning yellow.
Water: Every 1 to 2 weeks. Be sure to let the soil dry out in-between. If your Rhaphidophora Decursiva is in a sunny location you will have to water it more frequently. Leaves will have brown spots appear if it needs watering more frequently.
Humidity: Average household room humidity will do just fine, but Rhaphidophora Decursiva's love humid conditions like bathrooms.
