Rosa’s place was exactly what my family and I needed. It was spacious, clean, and full of amenities. There is a lift which was handy for getting our luggage up to the fourth floor. It is located right on top of a supermarket, a bakery that opens at 6:30AM, and near Carrer de Blai (a street with lots of popular tapas restaurants). Furthermore, if you are a walker, it is walkable to all the tourist attractions too (minus Sagrada Familia and Park Guell).
We didn’t meet Rosa but checked in with her friend, Dennis, who was very punctual, helpful, and welcoming. She gave us lots of tips and transportation options.
A few cons include: noisy neighbors st night, dry air circulation in the apartment, and shoddy wi fi near in the bedrooms.
I recommend staying here if you can navigate yourself around the city with Google Maps.