Hard to tell where this pic is taken. From the line numbers visible (62 and 46 I think), the single track line, the scenery and the angle of the sun I'd say it's Valencia street,running northeast-bound (other direction ran on parallel Mallorca street, but it couldn't be that because the sun always shines from ocean side toward the mountain. so it could never shine onto the left side of a southwest-bound tram). Check it on the map to understand what I mean, Valencia and Mallorca streets still run in the same direction now as back then. Around here
https://www.google.es/maps/@41.4068401,2.1807865,16.67zTrams only ran on these two streets around the are you see in the map, and eventually turned downward toward the city center.
