Two doors north of the pizzeria on Dunhua South, in what used to be that dingy but tasty Thai resto with the white and green sign outside. You gotta try it; flavors abound! Best I’ve had since Rome in the summer of 2006. 
wow, that’s a great endorsement! i saw the signage, but didn’t have a chance to go by yet. what is your favorite flavor?
They had a raspberry yogurt blend that blew my mind. Fragrant, tasty and left me wanting more. Go for lemon (limoncello) if you are in anyway traditional or faint of heart.
Go. It’s yummy. Get off at Zhungxiao-Tunhua MRT, head north up the east side of Tunhua, spit in/sniff at/ignore the portals of Haagen Daaz, pass the pizzeria, then enjoy the decor and gastronomic delights of the gelateria.