Pizzeria Da Nanni Barcelona. One of the best pizza restaurants in Barcelona located in the Gothic area of Barcelona's old quarter. You can also find Da Nanni locations in the Born area oncarrer Rec 30 - in the Raval on C/ Tallers 72 - and C/ Tallers 69 - in Poblenou on Rambla del Poblenou 20-and in Gracia area on Carrer Verdi 35