Dunno if it's just me, or what, but immediately to my left when I enter my basemant (Lakeview, haven't been to the others yet) is a doorway with skulls over it running right into a wall. I've built just about everything the basemant has and I still have no idea what this is for. Anyone?

I've seen a video on Youtube where that opening has an open coffin in it. For Vampires I suppose. I haven't done much in the basemant personally so I couldn't give you anymore information than that. Hope it helps.

It's a semi-secret alcove to build/place your coffin if you're a vampire. My only question is does it remain there if you cure yourself?

Yes, if you're a vampire, you can build a coffin in that alcove.

Edit: Ninja'd

Yeah, I was surprised that you get a shelf full of skulls, even as a non-vampire. Ew, not the basemant look I was going for (reloaded).

Well, finally I have a place to get some restful sleep that's not in Volkihar Castle. My very own "coffin in the cellar". Vampires can't get proper rest in a regular bed. If the player isn't a vamp then don't create the coffin. But! Don't remove the basemant workbench because you might one day get the affliction and need that coffin.

It's a spot to build a coffin for Vampires, And it stays there after you cure yourself.

I LOVE that coffin. 10% magic resistance AND 25% to healing? Yes, please!