Quantum Coffee Roasters

Fantastic service and one of the best iced matcha latte’s in Cardiff. Very nice space for getting work done as well

Lovely coffee, great muffin, and a lovely relaxed atmosphere. The best coffee in the bay, probably!

Really nice coffee , nice space for chatting with friends and working staffs are friendly they have specialty coffee retail shelf as well . Highly recommend but no my favourite ham cheese croissant

Nice cafe just round the corner from Cardiff Bay. Friendly staff and very relaxing atmosphere. They carry a variety of beans although they are for sale and you can’t choose what your coffee is made of. On my visit the only choice for a drip (filter) coffee is from Yunnan China. Coffee was nicely brewed but a little too weak for my taste. I still enjoyed it though. It’s always nice to have freshly ground and brewed coffee.

One of the best coffees I have ever tried in the UK.

A cozy haven serving aromatic brews, delectable treats, and warm hospitality. Friendly staff, lovely place. We ordered a black Americano and cappuccino, which was excellent, An unforgettable coffee experience, highly recommended for you!

I really enjoy the area. it's very cosy and wide open space. The options are somewhat limited, but I do like the beverages, my favourite being matcha coffee, and they do a cold brew. I got a smoothie yesterday, which was great, and the portion was great.

I had a vegan Muffin with Pistachio and an Americano. I also tried an vegan Biscoff Latte. It was very delicious. The staff was very friendly. I recommend this coffee shop!