I don't really have much to add to all of the other glowing reviews because they pretty much say exactly what I would say, absolutely everything about Josep and this apartment is wonderful.
But I will say something anyway...
Josep was waiting for me upon my arrival and he was super friendly, charming, inviting, an all around lovely guy. He showed me how how everything worked and gave me a ton of awesome recommendations. As if all of this wasn't already amazing, he also let a bottle of wine as a welcome gift, which we promptly enjoyed in the great terrace.
The apartment itself is located two blocks away from the Sagrada Familia, the metro station and close to amazing restaurants, bars, and supermarkets. It's immaculately clean, has all the utensils you can possibly clean, and is smartly decorated.
I can't wait to go back to Barcelona and stay at Josep's again.