Best Bars, Pubs, and Lounges in Reykjavik, Iceland:

1. Kex Hostel Bar: Located in an old biscuit factory, this trendy bar offers a cozy atmosphere with live music and a great selection of craft beers and cocktails.

2. Micro Bar: A must-visit for beer enthusiasts, Micro Bar offers an extensive menu of Icelandic and global craft beers, served in a relaxed and friendly setting.

3. Slippbarinn: Situated in the trendy Reykjavik Marina, this stylish bar offers stunning views of the harbor, delicious cocktails, and a diverse selection of wines and spirits.

4. Kaffibarinn: A popular spot among locals and tourists alike, Kaffibarinn features a lively atmosphere, quirky decor, and a wide range of drinks, including an impressive collection of gins.

5. Papa Gísli: Known for its warm and welcoming vibe, Papa Gísli is a laid-back bar offering a mix of local and international craft beers, along with a great selection of whiskeys.

Best Areas for Nightlife in Reykjavik:

1. Laugavegur Street: This bustling street is Reykjavik's main shopping and nightlife hub, lined with a variety of bars, pubs, clubs, and live music venues.

2. Austurstræti Street: Located in the heart of the city center, Austurstræti Street is known for its vibrant nightlife scene, offering a mix of bars, lounges, and nightclubs.

3. Hlemmur Square: Just a short walk from downtown Reykjavik, Hlemmur Square is a vibrant area with a range of bars, clubs, and late-night eateries.

4. Rósenberg: Situated in the historic center of Reykjavik, Rósenberg is a popular spot for live music, offering a cozy atmosphere, talented musicians, and a great selection of drinks.

Note: Reykjavik's nightlife scene shows different operating hours and preferences compared to other major cities. It is essential to check specific opening hours and availability ahead of time, especially during weekdays.