Milano Malpensa (MXP)Take Malpensa Express train to Saronno. Change over to the direction of Como Lago at Saronno. Get off the train at Como Borghi. The apartment is approx. 15 minutes walk. Please, not that this route is recommended if you only have light carry-ons/backpacks.
Another option (with heavier luggage) is to get off the train at Como Lago and take the bus n.4, which takes you to all the way to Rienza, 31.
Milano Linate (LIN)Take a direct bus to Milano Centrale train station. Service provided by Autostradale.
Then take a train to Como S. Giovanni. After that, bus n.4 will take you to via Rienza, 31.
Bergamo Orio al Serio (BGY)Take a bus from Orio al Serio to Monza or Milano Centrale - there are various companies and the bus station is located right in front of terminal building. Then take a train to Como S. Giovanni. After that, bus n.4 will take you to via Rienza, 31.
If you arrive/depart early/late - consider requesting a transfer at
http://www.gettransfer.com. It will most probably cost you much less than a regular taxi.