Complex sentence: Spiaggia was noted as one of Restaurants and Institutions Top 100 Restaurants in 1998 and 1999, and in 1999 Spiaggia also became Chicago's only restaurant to win four stars from both the Chicago Tribune and Chicago (magazine).
Split into simpler sentences: Spiaggia was noted as one of Restaurants and Institutions Top 100 Restaurants in 1998 and 1999. That same year Spiaggia also became Chicago's only restaurant to win four stars from both the Chicago Tribune and Chicago (magazine).