I prefer my Manhattans served "Sweet", or "Perfect " at a push. The Manhattan is complex, challenging and moreish. Best of all, it's available in a style...
As this was cocktail of the day I wanted to make this tonight as a pre-dinner drink not realizing it is considered by some as more of a digestif / after dinner drink. As suggested by others to add a barspoon of Maraschino syrup it worked perfectly! (After all, it is a Sweet ManhatanI). I should add though, Bourbon is still not available here, so I only had rye which maybe "toned" it down a bit?