This hotel, part of the Grupo Habita chain, was one of the hottest places to stay in Puebla when it opened in 2008 and remains a must for design and architecture fans, even if attention to detail is slipping. While many historic elements of this former 19th-century water-purification plant have been left untouched, ultramodern materials have been used for the renovation by famed architect Ricardo Legorreta; rough-hewn stone walls are paired with brushed metal and polished glass. The place has a whimsical attitude, with wonderful touches like the glass-sided rooftop pool. Rooms, decorated with sleek furnishings, are positively modern. The menu at the hotel restaurant, designed by renowned chef Enrique Olvera, serves many traditional regional options.