Concierge.com's insider take:

High above Postiano is a tiny village called Montepertuso. Once upon a time, the only way to get up here was on foot or by donkey; these days there's a road, which brings one up in around 20 minutes from the Amalfi Drive junction. Positanesi and tuned-in visitors brave the curves of an evening to bask in the cool mountain air and to eat at Donna Rosa. The decor is perhaps more bijou-elegant than one would expect in such a rural backwater, but the cooking is of the delicious, down-home variety, with primi such as Black & White ai frutti di mare (black-and-white strips of homemade pasta served with seafood) and terrific desserts (make room for the hot chocolate soufflé). The wine list is another bonus: It's a really knowledgeable selection, particularly strong on whites from the Campania region. Opening times vary according to the time of year, but the general rule is that in August they're open daily for dinner, in July and September they add lunch from Wednesday to Sunday, and in the low season they close on Tuesdays. Oh, and they shut down between November 5 and Easter. Simple, huh?