User blog comment:Blood Reaper/Skyrim Theme with Christmas Lights/@comment-24.3.134.81-20120101191420/@comment-3523404-20120101191929

If you're playing on PC, you can use Console Commands to force-remove vampirism. I'm also wondering if Innkeeper's sleep. If so, approach him/her while they're sleeping and initiate conversation. That way, they won't be able to attack you.