The Bar/Lounge at 11 Happy Backpackers
The bar/lounge at 11 Happy Backpackers is recommended by those who travel for a living. Of the 2 reviews that we monitored, 2 mentioned the bar/lounge, like Rough Guide and Lonely Planet.
11 Happy Backpackers 
Rough Guide
Lonely Planet
Rough Guide "Big, friendly place with a mix of no-bunk, a/c dorms and simple en-suite fan and a/c rooms (some without windows) plus a brilliant leafy rooftop restaurant-bar with pool table, hammocks and lots of nooks for hiding away"
Lonely Planet "This is one of the original backpacker pads in Phnom Penh, with a sprawling rooftop bar-restaurant offering chairs for chilling out and a pool table"
