what's a nice, quaint and quiet resto/bar/cafe in london waterloo area?

try the Auberge which is here:

http://www.beerintheevening.com/pubs/s/67/6748/Aub...

or alternatively wander down by the river to Coin Street :

http://www.coinstreet.org/shopeatdrink/shopkeepers...

Finally you could check out the Royal Festival Hall (before you reach Coin St) which has a great space at the entrance called The Ballroom. Lovely bar and sitting area, good for people watching!

Quiet Bars London

Waterloo is a very busy area. However, turn left out of the station and head for 150 WATERLOO ROAD, SE1. There is a brilliant bar called "The Fire Station". Yes, it's an original fire station renovated into a bar. It's quiet, very comfortable and just a nice bar to be in! Good Luck!