Discover charming old town of Novo mesto that is just a 10min walk away with river wrapping around and many coffee shops to relax in. Visit wine trails and try out some local delicacies. Everyone is welcome.
Or you can use flat as a base to discover other parts of Slovenia. Great idea is to visit natural health SPAs like Dolenjske Toplice Terme and Smarjeske Toplice Terme (both 20 min drive) or visit capital city Ljubljana (45min). Why not visit Croatian capital Zagreb too (cca. 1h drive).