We stayed in this apartment over new year's week. 2 adults & 2 kids. The location is perfect, with a walk of just a couple of short blocks to get to a metro station that serves 2 lines plus the montjuic funicular. The metro station is on a major road (Parallel), so you can easily find shops, cafes, restaurants, etc. However, the apartment is on a small residential street, so it's nice & quiet. There is a small grocery store just a block away, and it's open from early in the morning through midnight. It's great for basics and you can also get fresh fruit & veg and items like pasta & sauce.
The apartment layout is very efficient. A master bedroom with attached full bath, and then a larger kids' room with two twin beds, a bath in the hallway (shower but no tub), and a tiny 3rd bedroom with bunk beds. Our son ended up moving into the 3rd bedroom because his younger sister was bothering him, so it was really nice to have that option.
The kitchen is small and basic, but good enough to make a few meals. The living room/dining room is cute and comfortable, and the couch was a fouton. The TV had several stations plus radio stations. Free wifi was included and worked very well. The Disney Channel (in English!) was a life saver when we got food poisoning and had to occupy the kids while we recovered!
Finally, Miguel was very helpful, staying late to meet us after our flight arrived late and we walked the wrong way outside the metro statiion. When we got food poisoning and asked for a late checkout time to allow us to rest, he generously allowed us to stay until we had to catch our bus to the airport. That was a huge help! Also, the apartment was spotlessly clean, including the kitchen and bathrooms.
The only reason I'm not giving this 5 stars is because there are a few things in the apartment that need repair. One of the 2 lights in the kitchen was out. One of the kitchen cabinets has a broken door. The toaster needs to be propped on its side to work. The master bedroom mattress needs to be replaced (I was sleeping on springs) and so does the shower head in the master bath. With a little TLC, this place would be perfect!