This flat is amazing. Thanks to well-chosen furniture and wooden floors, the space feels extremely welcoming. It is also functional: we managed to cook dinner for five guests without any problem using the kitchen area, the bathroom is essential but well-sized, and it was a pleasure to sleep in such a comfortable bed. Not to mention the large terrace with its flowers, and lovely views of the Museu Nacional from some parts of the terrace (although most of the view is on the surrounding terraces and buildings).
Similarly to the flat, the Plaça de Sants area is also very welcoming, with nice restaurants nearby. Our host Roberto offered useful recommendations although we enjoyed just walking around and choosing a new place every night. There is also a fruit and veg shop next door, as well as two supermarket less than five minutes away.
The Plaça de Sants underground station and the Sants station are both close-by and very convenient to reach other areas of the city, the airport, or pretty much everywhere else in Spain by train or bus.
Another plus of this flat is the host, Roberto, who met us on arrival and offered extremely detailed info on the flat, area, and city. It was a pleasure to meet him!
As you can probably tell, we absolutely loved this flat and our stay in Barcelona. However, this flat might not be the best choice for people with heavy luggage - it is in a building without elevator and on top of a rather tall and narrow staircase. Yet the flat itself was well worth carrying my 15-kilo suitcase to the top.