I wintered in Orgiva for a couple years. Well, it's not as cold as Northern Europe but you do know it's winter. Mainly the rain. First year we got 1.4 meters between December & February. It was rain at our altitude, of course. The mountains up towards Mulhacen were heavily snow covered & I'd guess the snowline was about 500 meters above us. Getting in & out of the valley wasn't too bad but there were a few hairy late night drives back from Granada through Lanjaron.that were made through thick cloud. There's some impressive drops off of that road so best not to miss a bend
I'd certainly agree with piccavey that you'd do well to rent for a while. Get to know you're way round. There's certainly some cheap places about. I rented a 3 bed cortijo with pool & about an acre of ground for 350€/month. Great in the summer but damp & hard to keep warm in the winter. It had a wood stove but wood's damned expensive up there. Compared with France, anyway. A lot of gas went through the gas heater.
Worth looking at your access, with any property. Most of the houses round there are on un-made roads. Dusty & bumpy in the summer but can be problematic in the winter. It depends who else is using it. If it's only you, you can keep it functional. The track I was on, the people at the end of it were doing building work & had trucks coming in & out. Chewed the hell out of the surface. A lot of work had to be done filling holes, shoveling stone into mud patches. Done by me because they didn't consider it their responsibility. Even so, there were times I couldn't get my front wheel drive up it because there wasn't enough weight on the front wheels on the slope.
Live music? There's usually something going on around Orgiva thanks to the amount of arty ex-pats live around there. I fact the place up the way from me was hosting gigs the time I was there. Trouble is, mostly they're hippy-dippy types with zero orginisational capacity, so nothing seems to last very long. Lot of hoping someone else will put up the money. Actually, the place could do with a good venue if you fancied creating one. There's some bars would be suitable & would certainly welcome the customers it'd bring in. Or there's some good things happen in Granada & Amunecar hosts a jazz festival in the summer. Or did when I was there.
As for buying... When i was there, 5 years ago, there were enough sellers. Story of Spain. The dream in the sun's gone sour. I'm minded the property price collapse has a lot more collapse left in it. Houses in places like the Alpujarras are pretty well unsaleable. There's absolutely no wealth being created in the local economy. How could there be? Out of what? It's dirt poor mountain farming. No industry. So mostly it depends on State assistance & what tourism & the ex-pat community bring in. There's little work & most people are scratching for centavos.
That said, I'm actually considering moving back, myself. It is cheap to live. And you can get away from winter by going down to Motril, sitting under a palm tree, drinking cerveza & looking back at the snow from a climate of a British spring.