Went there only once - but the place totally won me over! The cafe is super cozy, the atmosphere relaxed and the staff very friendly. They have books, magazines and a couple of games, which invite guests to stay longer and linger. (No pressure to consume, though!) I didn't try a lot of food but the vegan apple pie I had was delicious and so was the locally roasted coffee they serve.
Had I stayed longer in Regensburg, I'd have definitely returned for a couple of more hours of comfortably passing time on one of their sofas - and trying the vegan sandwich ;-)