For long term stay during training you could also find cheap apartments. When you share an apartment with more of your classmates you may have to pay around 100-200 eu a month. That is a lot cheaper then staying in hotel. That is how I did it during training when I was in Lithuania.
For apartments check
Nekilnojamo turto skelbimai - Aruodas.lt or
Parduodami butai, namai, sklypai - nekilnojamas turtas Lietuvoje | Domoplius.lt . Usually those apartments are with furniture .
Good luck to you guys. I wish I had that opportunity back then in 2011 when I started training at BAA, but happy for you guys and wish you all the luck. Wizz is growing and a very succesful LCC in Eastern Europe. And guys, stay focussed, Wizz has to many good looking flight attendants
. So if you have a girlfriend, better not tell about that :P .