I loved the episode because Lucifer was just awesome and creepy and overall brilliant. You're right, it was a bit strange that Michael and Adam weren't mentioned; as much as I hate to say it, I think the writers are ignoring/have forgotten all about the other two. But I'll take the honeymoon suite suggestion.

I'm all for Sam/Lucifer and Sam/Dean but why have you crossed out Lucifer/Sam/Dean? Sounds doable to me :D