Rental Deposit Account (Luxembourg)

Hello everyone,

I have to open a bank account for my rental deposit (garantie bancaire irrévocable) and I am a bit disappointed because two banks I've been to so far only give you this account if you also have your giro account at the same bank plus they charge you 25 EUR per trimester for it and the interest is really tiny. I am used to German banks which give this kind of rental deposit accounts for free, independent from any other account and you receive interest on the deposit.
Does anybody know of a bank in Luxembourg which does not charge for this kind of account?

Thanks and regards,
Beate