It does feel a little claustrophobic on the left wall, but there's also a small seating area on the right by the window as well.
Yes, there's bar seating along the left wall as you enter. My experience is that people are generally sitting to wait for their order rather than sitting to enjoy their drinks in the store.
It has one row of seating extending to the back of the store. It can be a little crowded sometimes.
A little bit but not a lot.
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