The apartment is a great place to stay. It is perfectly located close to various shops, bars, restaurants and the market with all of fresh food you can think of. Also to important sights such as la sagrada familia and casa mila, casa botllo it's just a short walk.
The apartment itself was the perfect match for us traveling with 5 persons. It has all you need: easy self check in, fully kitchen, wifi, nice bathroom, comfy beds, lift and many more.
So long story short: strongly recommended.