It is best to water this plant when the top of the soil is dry - about once a week should be sufficient. Make sure not to over-water as this can lead to root rot. Additionally, fertilize your Maranta Variegated 'Beauty Kim' houseplant every 2-4 weeks during the growing season to keep it healthy and vibrant.
Marantas do best in bright, indirect light but will tolerate a bit of shade. Avoid direct sunlight, as this will scorch the leaves, and keep away from draughts.