I just got my Multi Engine Rating (Mep-l) at Bartolini. I did it on the Tecnam.
My experience with the school is very good. I have received flight instruction in Norway, USA and now Poland, and Bartolini impressed me. English was good, they never promissed more than they could keep, and they where service minded.
I stayed at hotel in Lodz and paid ca 60 EURO a night, but there are lower priced alternatives. Taxi from centrum to the school was ca 8 EUROs.