Hello, with my family we rented an appartment for one week. Half an hour after our arrival we noticed huge amount of mold. We immediatly requested a new appartment at reception but got told that nothing is free. So we asked them to at least clean it up. When they did the smell was too bad to sleep in that room. So all 5 of us had to sleep in one room. Next day we went to agency and asked for a discount/refund. They refused and gave us another small appartment for one day so three of us could sleep normaly. After that it was kinda ok, but appartment wasn't exactly in top state. We weren't only ones with mold problem, but we had the worst case. Now how should we proceed with complaint/refund request? I have attached pictures of the mold.