Have used Auto Europe many times in the past in a variety of countries and always received excellent service.
About the service from the local car rental company - SIXT
Very efficient agent at Cluj Airport who carefully listed all the damage to the hire car (and there was a lot!) having given me a free upgrade to an automatic Opel Astra. The car was originally due back at 1630, being the last time of acceptance on Auto Europe form. However agent offered to have me leave it early the next morning (still within same number of days) and keys through letterbox. Checked my credit card today and block released and no charges.
Car was fine, though having done over 70,000km it was starting to show its wear.