It is definitely smaller than the phone booth library in England.
This tiny library is the close to where I live.
This bookshelf library can be accessed from either side by opening the glass doors. There are ten shelves, five on each side. The sign in German, when translated says, "open book closet." It is an official Frankfurt am Main City Public Library and is always open.
Of course, since this is Germany, books are borrowed on the honor system. Take a book and bring it back when you've finished reading.
I looked inside and scanned the titles. They are all in German and some of the books looked very old! I pulled one out to look at it's printing date: 1926!
Another angle of this library.
Libraries, whether large or small, whether the books are in English or another language, are one of my favorite places in the world.