After I paid the whole amount they sent me a contract saying that I've paid much less than the actual amount. Then they sent me a message saying that they took more money from me so they could pay the taxes (although there was a huge difference in the price). And when I arrived, they told me: you have to pay an extra 50€, and then they threatened me to report it if I don't and told me to pay 64€, which I paid because I didn't want to ruin my vacation.
The place is good, it's quite big, and the location is not far away from the train station but it's far from most of the touristic monuments and landmarks. And there is no elevator, so if you have any injury that prevents you from using the stairs then maybe it's not the best choice for your injury.