I'm in Love with Lisbon
I love this city. During the day it's beautiful and you can easily entertain yourself by simply walking around. However there are also tons of great things to do a places to visit, from surfing to hiking, all within a 40 minute train ride. The night life is FANTASTIC and you won't want to go home until the clubs shut down at 8 am. All that said Lisbon has a highly relaxed and welcoming vibe that allows you to party hard or relax, whatever you feel. Also food and alcohol are cheap and delicious.
Insider Tip:If you plan of staying in Lisbon and you feel like being extra social stay at the Oasis Backpacker Hostel. It's the best. Also around 2 pm grab and beer and find a view of the river. It's perfect.