Monsaraz
A fortified village perched on a hilltop in the Alentejo with essentially one main street, whitewashed buildings, and unobstructed views across the Alqueva Lake.
The place is genuinely quiet year-round because there’s nothing commercial about it; locals outnumber tourists by a significant margin. You come here to eat lunch at one of two proper restaurants (both good, both simple), walk the medieval walls, and sit in the late afternoon watching the light change across the water.
Comporta
An hour south of Lisbon, a dune-backed beach stretch along the Sado estuary where the entire vibe is built on discretion. The design-forward hotels (Sublime Comporta, Comporta Natures Club, and several smaller properties) are understated.
There are a few restaurants worth the drive (Museu de Comporta for seafood, Henrique Lapa for wine), a handful of concept shops, and an unmarked beach bar or two.
Tavira
A working fishing village in the eastern Algarve with tiled houses (many dating back centuries), an actual seafood market where locals buy their dinner, and ferry connections to the barrier islands, specifically Culatra and Farol, which have maybe a few hundred residents combined and almost no tourism infrastructure.
Tavira itself has a handful of good seafood restaurants (O Armazém do Sal, a converted warehouse turned restaurant) and a couple of small guesthouses, but most people use it as a base for day trips. The real draw is that it hasn’t been resorted or gentrified; it’s fifteen minutes from the Algarve’s main beaches but feels like a different region entirely.