Another Country

Second-hand book store and lending library
Noteworthy for: The live acoustic evenings most Wednesdays are delightfully free.

This is such a great idea – you buy a book, decamp to a Berlin cafe for a few days to read it then, if you don't want to keep it, just bring it back for a refund, minus a Euro or two for the privilege of borrowing it.
It's perfect for those who hate having to pack 'vacation reads', and with 20,000 books to choose from be prepared to spend a good hour dawdling over which classic to rent next. An extra treat are the regular film, dinner and acoustic evenings they hold here – impossibly civilised.