Location is amazing--we had a 5th-floor (3r piso) room with a balcony overlooking Gran Via de les Corts Catalanes, just a beautiful view. It's a huge, diffuse city, so everything you'll want to see is at least a 5‐10 minute walk away, but Sagrada Familia is pretty close by. There is also a metro station about 5 minutes away, and plenty of bars and restaurants within a few blocks as well. Arco de Triunfo is right there, and Parque de la Ciudadela and the beach are all a nice walk to the southeast.
The price is fantastic, and for it you're getting a nice spacious room with a couch and bed (TV did not work during our stay), wifi, a modest kitchen, and three bathrooms (two with showers). There were other guests there during our stay, and I'm pretty sure one of them stole my outlet adapter for American wall plugs which didn't make much sense since they were all French, but they were mostly out of the way.
Our host was very helpful, available, and responsive. All in all a fun time and a great place to stay. Be mindful of the elevator, it's finicky.