On our latest trip to Peru, we anonymously reviewed seven hotels, paying the full rate and never disclosing our identity. We checked in on three previously recommended properties — Rio Sagrado, A Belmond Hotel; Sol y Luna; and Inkaterra La Casona — all of which continue to merit our endorsement. Of the four new hotels we tested, only two made the cut: chic CIRQA in Arequipa and the more traditional Las Casitas, A Belmond Hotel, in the Colca Canyon.