Memory by WANYI 宛儀
I personally prefer the Elephant Grounds in Starstreet, but this one is my go-to when in Causeway Bay. Cute outside seating area. Extensive list of options for coffee and tea. Their food menu is actually quite impressive as well. Not to be overlooked as a place to have casual lunch or dinner. Can get a bit loud when it's crowded though, since tables are quite close together.