This is a pretty cool coffee shop and cafe with interesting vegan sandwiches. I came for tea and desserts, though.
First, they have about six or seven vegan offerings. I tried a "buckeye" ($2) which was a peanut butter chocolate bon bon, and also had a double chocolate cookie. The buckeye was great: rich peanut butter flavor with smooth chocolate. The cookie, on the other hand, was dry and had a weird soy aftertaste (something I haven't encountered in a long time, despite having been vegan for over six years).
I also tried my friend's chocolate mocha cake which looked amazing, but had a sharp soy aftertaste as well. I think Haymarket needs to work on its vegan offerings that have chocolate.
I also had a pot of kikucha tea (twig tea) which was nice to see, as you rarely find that on menus at coffee shops.
The top floor of Haymarket is much more welcoming and hip, but the seats get taken quickly. While there's ample seating downstairs, I found this portion to be dark and depressing and definitely not the type of place I'd want to hang out with a friend.