The phrase "albeit sweet" is correct and usable in written English.
It is typically used to introduce a contrasting idea or qualification, often to soften a statement or acknowledge a positive aspect despite a negative one.
Example: "The movie was long and tedious, albeit sweet in its portrayal of love."
Alternatives: "though sweet" or "even if sweet".
"And then Gavin is a very sort of straight, heterosexual man, albeit a sweet one.
Presented by the enthusiastic members of the New York Jewish Teen Theater under Sasha Nanus's direction, this 70's show is a cry for revolution, albeit a sweet one.
I had it for breakfast, around 11am, and it left a sweet (albeit fishy) taste in my mouth for the next few days.
It's overrated but it can actually be rather sweet, albeit with self-consciously saucy bits (An old lady talking about drugs! How risque!) and an irksome jarring inauthenticity.
But even as I agreed to this plan, a small voice in my head kept stating the obvious, "How nice can the house be if the owners don't mind a dog?" The place we chose looked sweet, albeit slightly rustic, in the photos.
In all likelihood they'll be mortified by it and you can enjoy that sweet, albeit brief, victory.
But before departing the country on her most recent jaunt, Madonna tried smoothing things with over with Banda by sending her a sweet (albeit kind of rambling) note.
Study after study has shown that HIIT – high intensity interval training – is a highly effective form of fitness training, and its short albeit-not-very-sweet nature makes it easier to fit into a busy day.
Meanwhile, SABMiller shareholders will probably accept whatever offer materialises and in so doing kill the goose that laid the golden egg, albeit for a very sweet price.
Then there was the dazzling exhibition of Schoenberg's Five Orchestral Pieces, cryptic, bejewelled, not without its touches of sweet harmony, albeit with a twist.
