Pretty sure none of these count as spoilers…but still.
Athenas - Just lovely to look at, a great boss fight and nice and compact. I just wish there was more of it.
Eden-6 - Surprised at how much I enjoyed this place. Did the majority of sidequests, which is rare for me in a BL game. The soundtrack is stellar, reminds me a lot of Diablo 1 and 2.
How about you? Please naturally tag anything spoilerific as such.