Here are some general observations about my solitary Hoya desvoeuxensis bloom from December: The flower surprised me and smelled exceptionally strongly of caramel. The bloom does not fully open until about 24 hours has passed. I was somewhat disappointed the first day when I took all of these photos that the flower was only opened this much:

The next day however I was much more pleased with it after it fully opened. The flower hung one for around 10 days, which was way longer than expected.