@bobk57, This may not be a complete list of benefits for a full suite. On the Princess FAQ page, at least two benefits are listed which are not listed on the amenities page given here by @LACruiser88. They are 1) Complimentary laundry service and 2) Complimentary access to the Lotus Spa Thermal Suite.
I have been trying to confirm both the laundry and spa benefits in various ways, but am dreading having to call Princess to ask. For one thing, I won't necessarily believe them because I don't think they always have the correct answer! What I would like is a contract someplace with all the benefits listed, but haven't been able to find anything that does this.
If you or anyone else can point to someplace credible to find the answer, please let me know. Or, if on your cruise you find out the answer, maybe you wouldn't mind updating here on these two subjects.
(FAQ pages links below)
https://www.princess.com/en-us/faq/onboard-experience
https://www.princess.com/learn/faq/onboard/onboard-experience/
The sections you're looking for here are "Stateroom Services" and "Laundry Services"