Just a warning before you come, they don't take cash and seating is limited.
The dessert however, is awesome. There are a variety of different flavors of ice cream you can try and all come with special toppings. We got the tiramisu flavor and there were actual pieces of tiramisu cake inside. The soft serve is served in a fried dough cone with a crunchy exterior and soft interior. The soft serve also is topped with espresso powder which makes the flavor jump out. Once you get to the bottom of the cone, there is a tiny chocolate ball which is also quite good.
This place is great and you should definitely try it out. Prices are around $11 for the soft serve + cone but they give you a lot.