What you really need to think of is how much time you want to spend on building and maintaining a website.
Or if paying a small fee for a 3rd party service that handles your site, communication and payments for you, would be a smarter choice.
I have my own site, I build and maintain it myself, it has cost me lots of time, and still is costing me time.
Building a new site has gotten more complex over the last few years, you need a mobile friendly site, that has a good SEO, and also complies with modern regulations (privacy, cookie policies, security cerificates etc etc).
If I would need to start from scratch, I would look into what some 3rd parties have to offer.
I do not hide I am a fan of Lodgify, although I am not using them (too complex requirements from my side).
You choose a template, they pull all data from your AirBnB listing and build a basic site for you.
You can than add as many extra pages as you want, where you can add all kinds of information.
They run a rudimental channelmanager, keeping you availability synchronized between Air, BDC and your direct bookings. And they handle your payments trough stripe.
There are many other services like this, they will save you lots of time and money compared to completely building your own site, and also they often do a much better job, than you would be able to do yourself.
I googles and quickly found a rental site using them:
You think you can build this yourself?