People hate weasel words. We can smell em from a mile away. So don’t use them.
Construct your claims so that they are true without them.
Delete extra words that don’t make your claim more true.
"Oldest remaining building…" is just another way to say, "Oldest building". A building that no longer remains isn’t a building any longer, right?
"Only Brand X gives you Termintops®." Well, of course that’s true, because Termintops is a registered trademark and you’d sue anyone else who used the word!
Be vivid. Tell a story. Don’t be bland.
But [most of the time] avoid using [carefully selected] weasel words that [sort of] dull your story.