which is the best way to get to the hotel from the airport?
The best way is to take the direct train from the airport to the Republika train station. There are trains about every 20 minutes. From there it's a 10-15 minute walk to the hotel, but if you have luggage it would be preferable to take a taxi. It's a 5 minute drive.
The Repubblica train station is close by, you can walk there and take the train to the airport. I think you have to change lanes one time. Aprox 1 hour trip.
(We had our own bus on an organized trip) Otherwise the reception can call a taxi for you.
Get an answer from Windsor Hotel Milano staff and past guests.