Thanks for the input! I would like to address some points made to clarify some statements made in my post:

• your mention about leveraging the third party's marketing tools to help boost occupancy: I 100% agree. For this particular client, most of their revenues come from bookings made through the third party, so I didn't recommend they stop using them at all, I was trying to put more focus on recurring customers and trying to systematically increase the number of international customers that book directly, rather than cease using the third party, which wouldn’t be an option for them. For example, they have a large group of people from Germany that come every year, but they always book through the third party. If they could incentivize them to book directly and pay with Bitcoin, they would increase their margins for the group (and they have many recurring, international customers like this that have their contact details, but can’t make a direct payment)
• the agency and upfront payment: that’s true, it is a convenience, but in my opinion the added effort of handling Bitcoin would be minimal to their business as they have competent staff in their invoicing and accounting department and by doing so the fees saved would outweigh the cost of additional hours needed to handle it (when considering if a recommendation should be made, I always try and determine the cost/benefit of the recommendation before bringing it to the client’s attention and in this case the benefit seemed to outweigh the cost)
• I’m afraid I don’t understand number three you mentioned

Great suggestion about trying to focus resources to try and attract Bitcoiners! Haven’t even thought of that. The issue is just that the owners are very sceptical about Bitcoin and if I could summarize their issues with it, I would say it boils down to understanding and trust. I don’t think they fully understand what it is, despite my explanations and practical examples and I think they view it as a purely speculative token/coin (or maybe even a scam) that can go to zero at any time. Anything is possible, but for me, the chance of it going to zero is less likely than the chance of their native currency getting completely devalued due to government meddling/policy (since January 2023, their currency has lost 15% in value to the USD and international sentiment doesn’t seem to indicate it slowing down). So, I will definitely keep it in mind for my other clients when they are interested in integrating Bitcoin in a meaningful and valuable way into their business, thanks!