This is a great bright, airy apartment close to Arc de Triomf and the metro. Its very clean. I was there for the Barcelona half marathon, which is close to the start line, don't need the baggage drop as you can get back to your apartment quicker than you can get your bags.
The room is well equip with a double wardrobe, side cabinets, table and chairs plus hanging rail, which is great as you can unpack all your stuff. Very comfortable bed.
There is a private bathroom which is clean with a great shower.
Fully equip kitchen, which we like, as even though we eat out we like to cook for ourselves especially breakfast before the half marathon.
Its easy to get to via Aerobus or metro. With the metro its L9 to Torassa and then L1 to Arc De Triomf, and apartment is right behind the metro station. With Areobus to Placa de Catalunya then 10mins walk.
Sergio is very friendly and accommodating. I would stay here again if I'm in Barcelona, so highly recommended!