Just like in the author's previous work (The Moonlit Tower), the writing and imagery in Swanglass is unique and absolutely beautiful.
Unfortunately, the game suffers from a lack of purpose. There really isn't much to do other than examine, explore things with your senses, etc. This wouldn't be so much of a problem if there was more to explore, more memories, etc., but as it is it ends up feeling incomplete. More to experience would have provided a sense of progress and closure, even without an actual "goal".
Swanglass is definitely worth playing, especially considering how short it is. While it isn't perfect, it is a memorable experience.