Hoya cinnimomifolia is a difficult to grow (at least for me) Hoya from Java with large 20cm long leaves.  I have struggled with it and restarted it a number of times.  I finally coaxed a few blooms out of it.  It you are looking for a challenge that can have spectacular blooms give this one a try.  I think my biggest problem with this one is that it is very sensitive to overwatering, and I am a chronic overwaterer.  I have not kept this Hoya now in sometime, but to my recollection there was no scent from the flowers on this plant.