
The Barcelona Casa de l'Aigua metro station of the line 11 is located between the Trinitat Nova stop and the Torre Baro Vallbona station.
From 2 to 5 days, the Hola card is the best option to visit Barcelona without stress, with unlimited access to public transport. From metro to tram, bus (TMB) or Montjuic funicular, not forgetting zone 1 trains, the Hola Barcelona card also includes transport between airport and Barcelona city centre.