Begonia Rex are grown for the stricking foliage, the flowers they put out are just a little extra.
They will prefer a location with shade and like to be watered on-demand, when the top soil is dry to the touch it means it needs water.
Don't let them dry out too much.
Sold in a 17cm hanging basket - Height approx. 35cm
Light: prefers partial shade and indirect light
Water: moist and well-drained soil
Temperatures: Whatever indoor, the warmer the better but they are pretty resilient