I hope i did not come across as Mr. Know it all.
The Swan is a Category 4 Hotel
https://www.starwoodhotels.com/preferredguest/property/overview/index.html?propertyID=1018
As the chart Liz referenced shows,
A Category 4 Hotel requires 10,000 point for a Suite Upgrade. These are normally the Grand or Executive Suites.
A Category 4 Hotel requires 1000 to 1500 for a room upgrade. These are usually the Deluxe Alcoves or rooms with an Epcot View
A suite confirmed room at the Swan is 20,000 per night. To upgrade to a suite is 10,000 points per night. We have used Starpoints for every trip over the past 12 years.
I spend over 150 nights a year at Starwood properties and have for the past 15 or so years. That earns alot of points and we have used points to book suites at the Swan.
We booked a 2 room suite for 10 days next month all on points.
Not sure we could go as often without Starwood and my work travel. This is the only good part of being away from home so often.