Complex sentence: San Alfonso del Mar is a private resort that opened in 2006 and that is located in Algarrobo, Chile in the Valparaíso Metropolitan Area that is notable for having the Guinness world record for world's largest pool.
Split into simpler sentences: San Alfonso del Mar is a private resort located in Algarrobo, Chile. It is notable for having the Guinness world record for the world's largest pool.