I wove that project. As I recall, I hand washed it like silk. Rolled it in a towel to get out the excess moisture and hung it over a couple of towel rods. My bathroom that has a bathtub has towel rods at the head and at the foot.
When it was damp dry, I tossed it in the dryer with a dry bath towel. Temp set to LOW and dried it for 15 min.
Then I steam pressed it to bring out the shine of the silk. Really lovely.