I didn't have a chance to meet Roger but his family is amazing.
Of course, this flat has perfect location, right in the "centre of the Universe" but this flat feels like Home. Home you don't want to leave. You can have a long a interesting chat with Roger's brother - Albiol or you can have a short talk with his father or mother. They have a lot of interesting books and art-books but if you don't like to read there're also maps and guides. Apartment is really big, room is small and cozy, you can feel safe there. There're other rooms that are rented too so one can meet interesting people from all over the world :) This house is old so mind that. It doesn't have any "new cool things" like microwave, induction cooking heat or smt like that. Idk why but for some people it matters.
Back to the location. Because it's in the centre you don't need to use public transport to explore 'the world around you'. It's close to the beach, to main touristic sites and, if you like walking, to Montjuic and even Tibidabo.