"Sintra, a resort town just a half-hour drive west of Lisbon, nails that perfect Euro beach, castle ruins, and fields of flowers trifecta. It’s also where I stumbled upon the insanely beautiful home of a Portuguese aristocrat who has recently converted the guesthouses of his royal palace into Casa Holstein Quinta São Sebastião, an airy hotel where no two rooms are alike, but all 13 have their own terrace, garden views, and private forest access."