Suite and Sweet are homophones and easily confused words.
Suite is a noun, meaning a set of rooms all connected to each other for temporary living quarters. Suites are typically found in hotels, motels, dormitories, cruise ships, or other non-permanent accommodations. They have individual sleeping spaces and restroom spaces, then a communal meeting space in the center where people talk, eat, watch TV, etc.
Suite can also mean a set of musical or art pieces meant to reflect a universal theme, they are meant to be enjoyed as a set, not necessarily individually.
Sweet is an adjective, referring to pleasing flavor, disposition or behavior. Sweet flavors include honey, maple syrup, and sugar or nectar-like tastes. A person with a sweet disposition is always a pleasure to be around, kind and generous.
Sweet! is a slang exclamation when a scenario works out really well for someone and they can’t contain their enthusiasm or can’t believe their luck. Dictionary.com says this usage dates back to the 1950s, but personally, I recall it being popularized around the recent millennium (late 90s-early 2000s.) This was captured in films like 2000’s Dude, Where’s My Car?
The following story uses both words correctly:
Seymour got a sweet surprise for his anniversary date! The hotel said the only room available was a penthouse suite on the top floor, and it wouldn’t cost more than the average room rate.