A great spot for a stay on a budget. It's relatively small, but cozy and comfortable. The location is awesome. You're literally around the corner from Casa Battló (it's visible from the apartment's back windows) and the Passeig de Gracia metro stop, which connects to a ton of key tourist spots around the city, so getting around is beyond easy.
Also, it's a block away from the 2254 restaurant, which is incredible, absolutely worth a stop. Higher-end tapas bar, easily the best meal my partner and I had in Barcelona.