Rick Steve's guidebook says that you can travel from Sagrada Familia to Parc Guell by the following:
Go to Sagrada Familia metro station and take Blue Line 5 to Verdaguer station (1st stop, direction Cornelia Centre). Transfer to Yellow Line 4. Take to Joanic station (1st stop, direction Trinitat Nova). Exit toward Carrer de l’Escorial and look for bus stop in front of #20. Take bus #116 to park entrance.
Any advice regarding the above? About how much time does the trip take? Is the bus stop easy to find and is it clear where to disembark? I plan to have a Hola BCN travel card.
Thanks in advance.