Hello Hello! If you are looking for a three/4 day break from the city I would suggest coming up to Punta Del Diablo in Uruguay! It is easiest to book a buquebus ticket here, will take to from the port to Colonia, included ticket transfer to Montevideo to the bus station and then a four hour bus ride up the beautiful Rocha Coast to Punta del Diablo.
This is the season for whale watching, horse tours through Santa Teresa National Park, or check out the sunset at Laguna Negra 3 KM away. Maybe you can take a day to see Cabo Polonio where you take a giant lifted 4X4 through sand dunes to reach the magical little pueblo of a town. There is an island where you are almost close enough to high/five all the sea lions and catch a view from the famous lighthouse.
I am happy to call Punta Del Diablo home for the past 5 months working at a hostel El Diablo Tranquilo Playa Suites in front of the quiet *at least until summer* stretches of beach Playa Rivero and are open year around. We have a lot of folks come up from BA, whether students studying abroad or expats looking to relax in front of the fireplace and asado at the same time, all are welcome! If you have any questions about getting to Punta or info about the surrounding destinations, I'd be happy to help!
Cheers,
Tim