Erm, there's one more thing - don't hit your head, but it's КопривЩица, not КопривСТица. Щ sounds like ш+т, rather than с+т. It's like "sht" in English or the "st" in the beginning of German words like Stein or Sturm.

I'm glad you enjoy your visits to this lovely town and I hope you find even more interesting places in Bulgaria, because we do have a lot of them. :)