I'm a fan of little local breweries so may be a bit biased, but I loved Conwy Brewery.
You'd barely know it was there, but there's an excellent selection of beers on tap, a large indoor seating area (that hosts bands at the weekend) and food trucks in the car park.
Friendly and welcoming, plus you can obviously buy beers to take away too.
Also, dog friendly if you have a pooch.