The apartment is located close to Fira - the conference center (5 minutes from the North Gate) but you need to have in mind that it's 45-50 minutes to main Barcelona's attractions if using bus/metro. Nearby hill - Parc de Montjuïc with olimpic center, castle and museum is just 30 minutes by walk.
At the apartment I lived with Emilija's friends. All good and calm people. I was fed with a dinner twice when getting back late at night.
Emilija is a kind person giving all the instructions and good suggestions about Barcelona and accomodation itself.