I've been here a few times and their Royal No.9 Milk Tea is great. Compared to all the other bubble tea stores, The Alleys milk tea has a very distinctive taste. It tastes.. strong in tea flavour?
What I didn't like about them compared to Chatime/Coco is that their tapioca was quite hard. It's still good, but i'd definitely prefer softer. It could just be a bad batch as well.
I also tried the Northern Lights. The beautiful drink that everybody always posts. Although beautiful, it doesn't taste good in my opinion. If you know what Haw Flakes are, this drink tastes EXACTLY like it. Not something I'd want to drink.
The store is quite small, they have maybe 10 or less seats. Like any other bubble tea place, it's mostly just a grab and go.