Eli & Agus were warm and friendly -- greeting us with broad smiles, and taking their time to tell us about some great places to visit, which metros to take, and advising on good places to eat and dishes to try.

The apartment was exactly as per description, bright and modern but with antique touches in an old world building. Importantly for us, the wi-fi worked well, and was fast enough to stream a football match. It was clean and well supplied with towels, cleaning products and so on. The bedrooms are well furnished, with great decorative touches (which is true throughout the apartment). The front room is spacious and had another large sofa in addition to the sofa bed which felt it was almost in a separate room). The only downside was traffic noise in the morning, but I guess that's to be expected in a bustling city centre.
The location worked really well for us -- a close walk to the park areas around the Olympic Stadium, botanical gardens, and museum of art and culture; just 2 minutes from a metro line that was 2 stops to the port, 3 stops to the old town, and 4 stops to the Placa de Catalunya. The Camp Nou was equally close. A Michelin starred restaurant across the street (we didn't get in unfortunately), two other tapas restaurants, and a cafe for breakfast are within a few doors of the apartment. A supermarket and other shops are not much further.

We really enjoyed our stay, and Eli & Agus's place will be our first choice if we return to Barcelona.