A "bittersweet experience" refers to a situation or event that has both positive and negative emotions or outcomes. It is a mix of happiness and sadness at the same time. Full definition
If successful, it will be as bittersweet an experience, as we wish him the accolades he deserves as a new Hollywood player, but we'll miss the more incisive, small - scale Kiwi delights of What We Do in the Shadows and Hunt for the Wilderpeople. (qwipster.net)
Organizing the show at White Columns in New York is surely a most bittersweet experience. (contemporaryartdaily.com)
Using Funtouch OS on the vivo V3Max is a rather bittersweet experience. (pokde.net)