I remember the opening to Blood & Wine being such a shock to me, I had done no research or anything and it felt like a second game, plus the opening set piece (IIRC) was pretty awesome. It won Game of the Year as a DLC so I guess we're not alone in loving it.
Honestly it was such a great way to cap off Geralt that I am happy he's staying retired. I just bought it for my Nephew on his new gaming PC and ended up restarting the whole game myself, this time I will reject my completion-ist urges so I don't tap out in Skillige.
(I've only ever completed it twice, one with no DLC & a second time with both. Two other starts have ended early into Skillige as I can't resist the ? even though I know they are mostly just loot I don't need).