This is a no-brainer. Definitely buy!! No question, it is part of your FIRE saving, especially if you can envision retiring there. Even if you don't rent it out, at that price, it's worth it just for the eventual appreciation and living value. But it's better if you can have renters, just so someone is there looking after it, and the squatters don't settle in. If you do rent, make sure you have someone local who can manage it for you - those guys are worth their %!
60e/yr in council tax is not bad. Glad you're thinking things through, but this is actually not so much in the long run.
I did a similar thing about 10 years ago, but didn't get quite such a low price. I plan on retiring in Switzerland, and found a place there that I love, at a reasonable price. It's been rented out consistently ever since, through a great manager (10% fee), and has been totally paying for itself. Values have almost tripled in that area since I bought, so just from a pure investment standpoint it's been worth it. And by the time I'm ready to move there, it will be paid for!
So.... Think of it as a "dirt bank" for your retirement. Not sure your citizenship/tax residency (UK??) but in the US this is a retirement investment you don't have to declare it on your US taxes, so its value will accrue without taxation, just like a 401k/IRA. And then it's paid for once you are ready to live there! What's the value (to YOU) of a home with no mortgage, where you want to live in your retirement? To me, it's HUGE.
Just IMHO... :-)