The host required us to pay a safety deposit of 800 euros, which was according to the advertisement. However, they forced us to pay the safety deposit via an external third-party website eventhough this is against the regulations of AirBNB. According to the regulation all payments including the safety deposit are to be made via de AirBNB platform in order for them to be able to mediate and regulate. Multiple formal messages were sent to the host regarding this issue, but they refused to provide us with an alternative payment method via the AirBNB website without going into detail about the reasoning behind this. They sent us the link for the security deposit a day before our reseveration, which made it close to impossible for us to request a full refund in time. In the end they also refused to give us a full refund. Luckily AirBNB was nice enough to provide us with a full refund.
The communication and trustworthiness of this host are exceptionally bad.