I'll be honest, I was expecting a more exploration-based game, like Super Metroid. This is obviously not what we got, the game ends up being very linear; but it's so satisfying to play, to master the full moveset, or even just to move Samus around really. Bosses are very fun, especially the final boss !
Game is short, like 6 hours or so, but it's 6 very polished hours. In the end I finished the game like 5 times in a short period of time; I had fun trying to speedrun it a little bit, and finding out that if you really want it the game can be not so linear ...