<…>
I found a thread that may be of interest to you, although it does not go into all the specifics you may need, but that could be a good starting point:
¿Puedo cobrar mis productos o servicios en bitcoin? (in Spanish, which I believe is your native language). You need to tie not only the platform/system to receive the payments, but also the tax/legal side of things ("nuestra querida hacienda").
I have read in this forum that Bitpay is not a good solution and coinbase.bussiness is the other alternative that a friend recommended me.
I already have a system called
https://www.avaibook.com/ running in my website, where they send the apartments availability to homeaway, airbnb, booking, etc. But they are not currently working with cryptocurrencies.
I imagine that I can use iframes of the calendar in each property to show the availability, and then:
a- put a space where the customer enter the ammount of €/btc, giving him a table where he can calculate the ammount depending of the entrance and arrival days, the month, etc.
b- find a system that is currently working with btc to offer the availability and prices in a fast way.
After all of that, I usually need 1 day for accepting or not the payment due to last minute bookings by other ways in the apartment.