I've been to Gdańsk a few times now and for the centre of town this place has become my favourite. There isn't much between them but I slightly prefer the Bioway chain to the Greenway one. There are many tasty vegan options, I have yet to try them all but certainly aim to! When I've been here the staff have always been friendly and helpful, even if there has been a language barrier. It is amazingly cheap (at least if you are from western Europe). There is no alcohol on sale but many good health drinks. The place itself is kind of canteen-like and functional but feels modern and clean. If in Gdańsk you really should go here, you won't be disappointed!!