Christakis Psyllides
Google
In this location, probably one of the very few Cafés I would spend much time in. Coffee is excellent, as are the tea and cake selection.
It's very busy, especially at weekends. You may need to wait, and it's very unlikely you will walk into a free table to sit down, buts definitely wprth it. At the front, it's laptop free, and they have about 12 seats or so, and it full virtually all the time.
There is more space in another room just around the corner where they do allow laptops for a bit of work. Make sure you check that out as it's not too obvious, and you could look a little ridiculous waiting for a seat at the front for 10 mins when that room was virtually empty.....like we did!
Highly recommended.