I think it's good. Not trashy like
Lola. Tackier when used as a boy name (not a nickname) by non-Russians IMO. I don't think it's likely to become any more frequent than, say,
Natalie (which is at #14 but still getting used only half as much as
Amber was at its #14 peak)... and
Sasha seems unlikely to get even that popular, because it just does not sound like the kind of name that US top ten namers would use. It's more suited to popularity than
Saskia though. It could become slightly trendy like
Autumn, I guess.