Unexpected destination, Venice is cheap to fly to in winter, so it’s a great port of entry on your way to Dolomites or Slovenian ski resorts.
Makes sense in case of Friday+Monday off.
Something in Slovenia?
Ryanair from 27 EUR (KIWI)
Val Gardena: 300 km (4 hr drive) from Venice.
Car hire: 3 days from 80eur.