Slight bias as it's my DD's name, but I love it and am still so pleased we chose it! It's a name everyone is familiar with but is still very unusual (except in France where Sylvie is the name of everybody's mother/auntie/cousin!). She is Sylvie most of the time although her name is Sylvia (I wanted to make sure I could claim she was named after the suffragette!). The sound of the name sounds so beautiful to me, like Silvery (as a pp sort of said).
Surprised it's not making more of a comeback tbh, like Ivy, Elsie etc.