TL;DR: Niche smut? Yes. Good niche smut? Yes!
The product description is perfectly accurate, so if it sounds like your sort of thing, it's easy to recommend; it's not simply 'good' in some abstract sense, but well-crafted and executed, with solid writing and featuring Angrboda's typically excellent artwork.
If it doesn't sound like it'd appeal to your particular set of kinks, it may well not work for you. But by the standards of niche smut, I'd rate it as 'mostly fluffy and harmless', so it probably won't scar your psyche the way some kinky things might. There's a place in the world for those, but this particular instance is a safe(-er?) entry point for the curious.