@Jacques - Another option is to keep your existing setup and just supplement with a streaming account like Netflix.
I've done this with 2 units so far and gotten both zero complaints and zero feedback (after about 60 guest bookings since december).
I'm personally not yet a cable-cutter at my own house. The industry is changing so rapidly, and it's just too easy for me to get the massive numbers of channels from a primary provider like spectrum or comcast or directv and just stream the movies I want with added services like netflix, amazon prime, hulu etc. Before switching to such a setup at vacation rentals I'd want to be confident that the setup just flat out works. Turn on any tv and it's live, no need to navigate somewhere or login.
I expect that any kind of streaming setup is still not as easy to use these days. No single service has all the content people want, and for sure you need at least something that resembles typical cable broadcasting with the major networks, CNN, espn, etc.
For myself, I've chosen to keep Comcast and add Netflix streaming using the TV's themselves. There are no extra boxes involved.
At each cleaning I have my cleaning person turn on the tv and start netflix and watch something. She actually prefers music, so this works for her anyway. This helps me know that the streaming is still working, and some folks will log in with their own account and forget to log back out when they leave.
If you have reliable wifi in your unit you don't even need a wired ethernet cable at the tv, but wired is still preferred. Fewer things can go wrong. But for me all of our TV's are connected by wireless and like I said, zero complaints.
My condos are in a large building at a resort. The building has excellent wired internet service and spotty wireless, so I've just configured a router/access point so that it broadcasts a private wifi in the area of our condos (which are about 1,000 sqft). That too has seemed to work pretty well without complaints, but it's hard for me to know since my instructions tell people to use either building or private (mine) wifi so they have two choices.
I chose the higher end 4K Netflix with I think is about $16/month, but I can use it in both units, plus a 3rd I'm about to add.
One issue is that I *never* give the account email address/password to the guest. If it turns out that the streaming isn't working, I've been prepared (and my instructions state) to tell them I cannot give it out. The reason being that with the email/password someone could change the password and lock me out. Wouldn't be too easy to correct either since I wouldn't have online access. I've worried about Netflix logging itself out, but it seems that isn't an issue for me since at least the cleaning person uses it every few days.
Back to your original question, maybe consider experimenting. The beauty of streaming is that (I think) it's mostly geography indpendent. So just buy a TV and use it for a few months in your home as your daily setup. Maybe set it someplace near your usual tv so it's reasonably convenient. Once you can convince yourself that it's simple enough then deploy it in your units. You might find that you have to return whatever tv(s) you buy if they don't work easily enough.
hope this helps ;-)
