Hello amylitas, I grow my Hoya shooting star in standing water. Like my container had drain holes, but I let it sit in the collection tray with water, always with water. That is the only way I can make it survive in our very dry area. It is by my west facing window, but gets protected from the hot sun by the sheer curtains. I also run our ceiling fans, to help cool it down.
I have seen this plant in the wild, growing in a foggy, cool area, So it likes that cool growing humid condition.
My plant will also blast the buds if it feels way too warm, so I keep it well shaded. So as a summary, it likes cool shady conditions with good airflow, grown and kept on the moist side to meet its very high humidity needs.