Complex sentence: Near the end of the 19th century, the hotel gained significant importance as it was the only hotel in Milan to offer postal and telegraph services; for this reason the hotel was often used by diplomats and businessmen.
Split into simpler sentences: Near the end of the 19th century, the hotel gained significant importance as it was the only hotel in Milan to offer postal and telegraph services. For this reason the hotel was often used by diplomats and businessmen.