It is located just next the Copenhagne Central Station, inside Hotel Plaza, which is very convenient if you have had one to many of the cocktails!
The atmosphere is casual chic, with lots of dark wood, cognac colored leather furniture and books along the wall. (Add the shoulderpaddings and the pinstriped suits and we would be back in "Dollars"). There are no windows in the bar which contributes to the very intimate atmosphere (and will easy make you forget all about time and space.)
This friday I meet with a long time not seen friend to catch up, and get a drink. I got the Plaza champagne cocktail, with dark rum, champagne and ginger ale - very refreshing! He had a beer.
If you wanna visit Library Bar, you can do so on this adress:
Plaza Library Bar
Bernstorffsgade 41577 København V.
You can also see the review of the place on My-Pleasures right here (it is in danish, but the pictures are way better than mine!)