First i would highly recommend this apt. for families.
Great position in BCN, nearby shops, metro and etc. Littlebit loudy street, but all BCN is loudly so for me doesnt matter.
Overall i gave 5 star, some things are between 3-5 stars and also from my experience a have to say you cant compare Spain meaning of quality with other regions, so have that in mind.
In Spain people are very friendly and custom orientated, so no problem style is what other regions of EU should learn from them. So my little issues were promptly done.
So if you are family with 2 kids and want to explore BCN, dont hesitate and book this apt !!