Getting around. Neiboorhood and the city.

Public transport ticket.
Single ticket costs 2,4€ each.
T casual. It’s a 10 ticked bonus for 12€. You have to buy 1 per person travelling
T familiar. It's an 8 ticket card. The same card works for the whole family. So 4 persons can travel 2 times.
T dia. All you can travel in 1 day for less that 11€ per person. Note that prices include only zone 1 which includes the whole city except the airport.You can buy all kind of tickets at: Vending machines at any Metro station and train stations.

Metro
Walk 10 minutes to Marina Metro Station (L1-red). In just 3 stops (5 min) you will be in the city center, also known as Plaça Catalunya.

Rent a bike
Most convenient way to rent a bike is by app. Get the bike and drop it in the closest station available. The red bikes that you see around are just for locals. You have a similar approach with Donkey Republic.

Parking
In the street: You can park during the night from 20h to 8h for free. Wekends may also free, check it out with the signs. You can also park for 2h paying in the parking automat.
Private parking: Check this site and book your parking ahead to get a good deal. You can also download the app elparking.
Neiborhood: Shops and restaurants

Groceries
Supermercat express: There is a small supermarket open til late located at Carrer Àvila 93. Just 200m away.
Marina is the busiest street in the neighborhood with shops. It's 10 min away taking Almogavers street on your left.
Rambla del Poblenou is a pedestrian street with restaurants and shops. It's 10 min away on Almogavers street on your right.
Farmacy. Just 2 minutes walk, at carrer Àvila 94.

Restaurants
Madre Lievito: At the basement of the same building, you'll find a great italian restaurant. highly recommended. Pizza, pasta and of course a good expresso.
Sopa restaurant - coffeeshop: Just 5-minute walk away, there is a great place to have tea, eat a homemade cookie or a vegan cake. Great place to work and play with a friendly atmosphere. Roc Boronat Street 114.

More restaurants
Rambla del Poblenou. My recommendation goes to this area. Is nice to walk, sit down in a terrace and you can also find all kinds of food.
Fast food. If you rather like fast food, there is a shopping center called Les Glories 15 minutes away from here. You have a wide diversity of food.
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Neiborhood: Activities

Walks - Jogging
Beach. 15-20 minutes walk, you'll reach the beach. You'll also find a path that goes along the coast where you can walk or bike or just find a park and sit down for a while.
Port OlímpicParc de la Ciutadella. It's the largest green area in the city center where people go walking and jogging. You can also bring your picnic and sit down in the grass.
Parc de la ciutadella map
Superilla
1 block away, on your right hand side, there is a only pedestrians area called SUPERILLA. With playgrounds, restaurants and other activities that you may enjoy. Lots of artist and cool tech companies in the area.
Activities in the city of Barcelona

Sagrada familia inside. Source: Wikipedia.org
Gaudí's architecture
Sagrada Familia: The amazing cathedral. (book in advance)
Casa Milà (la Pedrera): Unique modernist house and special roof terrace with activities such as concerts. (book in advance)
Parc Güell: A very special park that deserves a visit. Check ticket availability and take a virtual tour now.

Magic Fountain
It is an illuminated fountain that dances with the music and changes to multiple colors. It plays almost every day at the evening and lasts about 30 minutes. It's free. Check schedule.
website
Unique neiboorhoods
Away from the city center and the crowds, there are some neigboohoods that can help you experience the city as a local.
Gràcia: It's like a small village, with lesser cars, narow streets and some fancy shops that can surprise you. Take the metro de Fontana.
Poble sec: As a multicultural and working-class neighborhood, Poble-sec maintains a popular character and a varied culture. Blai street, which is like a small Ramblas and Paral.lel with lots of theaters. Take the metro to Paral.lel or Poble sec.

Around Barcelona - Catalunya
Less than 1h drive or by train, there are great places to visit.
Girona: A small city up north with great culture and food.
Montserrat: A mountain to walk and climb and a monastery to visit. A day trip without car.
Wine taste: Penedès is one of the regions with more vineyards in Catalonia. Worth a visit.
Explore Catalunya