The President of the ECB and the other members of the Executive Board may be consulted by the responsible committees of the European Parliament at the request of the European Parliament or on their own initiative.” In practice, the Eurosystem goes well beyond these Treaty obligations.
There have been a few occasions recently where banks have taken the decision to tighten up on lending to particular sectors, e.g. inner city apartments. Despite this causing some pain to developers, it is a good thing overall for the economy.