We stayed in this apartment with two families (children aged between 5-10) for two nights. The apartment is a short walk from the Sants train station and close to metro stations, so it is reasonably convenient to see the sights from there; you do need to travel a bit. There are grocery stores in the same and neighboring blocks, so getting supplies is very easy. The apartment was very clean and spacious and had air-conditioning, so we were very comfortable. We also had the use of the pool (there are restrictions to times you can use it due to noise), which the kids of course loved. Lijie was very helpful and friendly. I gladly recommend this apartment for family groups wanting to stay in Barcelona.