The newly renovated historic Excelsior Hotel Gallia is a gorgeous step into a past era with its Art Deco influences, and then a kick into the 21st century with smart technology, gorgeous design, and contemporary Made-in-Italy furniture. If you don't stay overnight, you will want to hang out here-- its prawling ground floor area is a Gatsby hang out area of high ceilings and marble, with a lounge, well-stocked library, cigar bar, restaurant and cocktail bar accented by light hues, warm fabrics and Poltrona Frau furniture.
Look out for its rooftop restaurant and bar. Location is key-- adjacent to the train station, its easy to get in and out of Milan. Gallia also has car service for transport to center.