Concierge.com's insider take:
Opened in November 2003, the Sheraton Porto Hotel and Spa is a gleaming paean to full-frontal modernism. The property even makes its next-door neighbor, the Meridien Park Atlantic, look dated. The design is indeed impressive—witness the startling all-glass elevator, with its silvery innards exposed. The place is packed with amenities, from high-speed Internet to an indoor pool. Following a minor local tradition, the on-site restaurant, Porto Novo, offers a superb buffet lunch on Sundays. The only drawback? The location, which isn't convenient if you intend to hang around the Old Town.