Great stays at:

Palazzo Naiadi, Rome (was able to use 5 SNAs for 2-level Jr. Suite.) Beautiful hotel, but did have service issue at Front Desk and housekeeping was a bit spotty. Great breakfast spread, including free item off menu.
Sina Villa Medici, Florence. Loved this hotel: room, service, breakfast, etc.

Good stays at:

JW Marriott San Antonio
Sheraton Stockholm
LAX Marriott (3 stays)
LAX Renaissance
Irvine Marriott
AC Hotel San Jose
Renaissance Midtown New York
Philadelphia Marriott (3 stays)
Courtyard Springfield (PA) - got upgraded to huge executive suite, a nice plus for my High School reunion weekend!

Good enough that I would go back:

Renaissance Heathrow
Kensington Marriott London (2 stays) my go-to for business because is under corporate hotel cap
Grand Hotel Dei Dogi, Venice - I was tempted to rate this higher because of location and breakfast. But rooms need an upgrading, wifi was out 3 of 4 days we were there. It really missed the mark for the price we paid.
Residence Inn Philadelphia (rooms refurbished this year, so actually much better than before)
Courtyard Saratoga Springs
Courtyard Wilmington DE
Courtyard Pittsburgh Airport
Rome Marriott Park (work event, got upgraded to very large junior suite with terrace - but hotel is the middle of nowhere)
Springhill Suites Phoenix Airport
Courtyard San Antonio Riverwalk

Will Never Return:

Townplace Suites Dallas/Irving - dirty room, hallways smelled, lighted sign was out in front of hotel, no one at front desk, etc. Truly bad.