We did not meet Sofia during our stay, but were met on arrival by Sofia's father who very kindly helped us carry our suitcases up to the apartment on the fifth floor.
The room is as per the listing and includes tea/coffee making facilities a fridge and microwave oven - so suitable for simple food preparation but not cooking as such.
The room benefits from its own attached shower room / toilet with private access.
Bedding, room, etc. were clean, and any communications during our stay were quickly responded to and any problems quickly attended to by Sofia's father.
We found it quite warm much of the time (also perhaps the result of climbing 5 floors beforehand). Although fans are provided, it was not practical to leave the balcony door open of a night due to street noise (not a problem with the door closed).
WiFi is provided, but connecting to it was a bit hit and miss and seemed to depend upon the time of day (more likely to connect in the early morning).
It must be stated that the best feature of the accommodation is its excellent location, being between Las Ramblas and the gothic quarter. The location has good transport links and a multitude of restaurants, shops & bars on the doorstep.
Barcelona has so much to offer the visitor and we enjoyed our stay very much.