My goodness it has been hard trying to find any information about this plant anywhere ever since a friend passed it over. Top line: it's a succulent. It needs good draining soil, water sparingly, and place it under the brightest sunniest spot you can find for the prettiest pink flowers to bloom. That very likely means raising it to the the ledge of your corridor. I'm still figuring out how to prune it to get the leaves bushier.
Difficulty level: Easy as long as you can resist the urge to water it
Sunlight: All the sun you can funnel towards it for maximum flower enjoyment
Water: Hydrate only when soil is dry. I water mine every 2-3 weeks.