We use teleast on a pay as you go service.
pay 100 euros to be fitted including router.
then you pay for how many days you require it, they are located at the top of the Square (opposite) side to hotel 525.
they speak good English, just pop in and pay cash or phone them up and pay over phone.
It runs at a reportedly 6Meg, never had a problem with it.
We have used 5 phones at once.
not used for films though.
If you want to pm me your email I will scan the rates over.
cheers.