Marta is very kindly to provide everything and answer every questions I asked, even notify me on her initiative that I can check-in early as my early arrival by train. I didn't meet Marta in person, her friend Alpha welcomed us, she is a spirited girl and so nice.

The apartment is good located, near Line 4/5 (Verdaguer), and Line 3 (Diagonal), Verdaguer is nearby but not inconvenient to get the sight points(except sagradafamilia, but we got there by walk), Diagonal is 500 meters away but can get everywhere. Supermarket is around and very helpful.

And the house is great! Big living room, kitchen, bath room, bedroom, really, big every room with every thing! : ) and good decorated (look new and keep very well), big bedroom is face to patio and elevator, and little bedroom (children room) is face to the subdistrict internally and a swimming pool.
Only only one shortage, no air condition, but have fan. (I found this situation is popular in Barcelona apts, but we met the unusual high temperature in June Spain.)

Actually I planned to choose an apartment located in La Rambla firstly, but can't find a good one. It was delighted to find Marta's house, seems not so close to the popular sight points? but no, it is nice and quiet, and not so far actually, can get everywhere, lastly, everything on pictures is what you get really.