A coffee shop opened in Ypsilanti a while ago. I drive past it semi-regularly. Their parking situation sucks (one of the reasons I've never stopped by) but I REALLY like the name:
The Ugly Mug.
On Saturday, I needed to get gas, and jebra went with, and we stopped by there on the way back to the house. When I stepped through the door I was assaulted by a burning odor. Wasn't sure if it was just beans, but I didn't think so; it was rather nastier than that. And it didn't go away. It seems to be a VERY smoker-friendly environment. I was not able to walk to the back, and even standing near the door was most unpleasant. I thought the mocha tasted good, although jebra prefers that from The Plymouth Coffee Bean.
Dang. I really wanted to like them. They have a sort of quirky environment. Seats around tables in the back, odd artwork on the walls, theater-style seats (they fold up when you're not sitting in them) around tables in the front. Many books (paperback, I seem to recall) along a huge bookshelf. Chess table near the back. Very friendly.
So, if you don't mind, or like, smoke in your air it is a fun-seeming (although not terribly inexpensive) place to go, to hang out. Perhaps to study. I don't know if they'd like you pulling your guitar out, but I don't know that they'd mind. But if you have a sensitivity to smoke, just don't go. When I finally got outside, I was reeling, choking and gagging for a few minutes. (And I woke up the next day with a scratchy throat.)
If we pass a law in Ypsi preventing smoking inside an establishment, and if it looks like I'll be able to get into the building without running too much of a gauntlet, I'll give them another go. After a month or so.