I can highly recommend staying at Lina's place. The location is perfect, directly at the Barceloneta beach (less than 3mins walk) and you can also walk into the city centre (15mins walk).
The area of Barceloneta itself is full of life. You have stores, restaurants, cafes and bars all close by. If you want to try water sports you can also find surf schools and rentals at the beach.
A gym and swimming pool and spa is within 8 mins walking distance.
The apartment and room itself is very clean and the bed comfortable. You have a wardrobe for your clothes and you can also use the kitchen and fridge.
If needed laundry is also available.
Lina herself is super friendly and very helpful. A wonderful host with lots of insights into Barcelona and what places to go to.
I will definitely come back to stay at her place, when I visit Barcelona again :).
Thank you for everything Lina :).
Further info:
A taxi drive from the airport is 35€ and will take about 25mins.