We've booked with Balkan got a great deal going back 8th March and got free lift passes. I think the offer is still on but only applies to certain hotels.
if your wife will be interessting in the area may be a trip to the townof Samokov will be interessting, she can visit some craft shops and looking as these handcrafts are made.
There is a coppersmith and some potteries in town.
Even a great possibility to had a great bulgarian lunch, f.e. in Old House restaurant.