For me the bedroom is a place of power, so it’s a natural place for an altar.
It’s so interesting to hear about different paths, and how completely opposite things can be true in different contexts and for different people. When in doubt about anything it’s good to listen how it feels in your body and in your heart. Contraction and the feeling of something being off is a no… relaxation, ease and openness is a yes.
I’ve also heard that the body will lean forward for yes or backward for no. This is also handy for asking your body if certain vitamins or foods are needed at a certain time.