DV8 Bar
(http://cambodiaphnompenh.com) on street 148 near the riverfront. popular hostess bar with a good selection of spirits and company.
OneZeroFour Bar
Street 104, (http://104barphnompenh.com). popular low-key hostess bar. the bar has a good range of single malt whiskeys.
Superficial security
Most of the time, Phnom Penh bars and clubs are safe enough and a lot of fun - however, some of the more "hip" places are popular with the notorious local "elite" youth and their minders who carry firearms and other weapons, and who are allowed to pass through so-called "security" checks without being searched.
Places to hang out after dark include Street 104, Street 278, and Street 108 around the Street 51 corner, which all feature restaurant bars, hostess bars, and guesthouses.
Caress Bar
(http://wix.com/caressbar/...). where the tonle sap, mekong and tonle basac rivers meet each other. cruise the mekong with style.
69 Bar
(http://69bar-phnompenh.com). popular dance orientated hostess bar, bar top and balcony dancing.
Martini Pub & Disco
Street 95 one block off monivong blvd, across from the total gas station. infamous girlie bar. 2 full bars, food us$2-6, burgers & fries, pizza, asian dishes, gaming room, disco, outdoor big-screen showing movies or sports. there some copycat martini bars in other places like sihanoukeville and siem reap, but this is the original. a place for single men and loose ladies.