20y/o Erasmus girl looking for an apartment to share in Barcelona for the 1st term of 24/25

Hi! I'm a Brazilian girl going on a semester abroad at Universidad Autónoma de Barcelona. I speak Portuguese and English fluently, C1 Spanish, and B1 French. I am looking for a private room in a shared apartment. I intend to stay near the Linea S2 del Ferrocarril, as it is the transportation I'll take to get to UAB. Given that, I prioritize staying near the streets Passeig De Gracia,  Av. Diagonal and Via Augusta. Such streets pass through the neighborhoods of La Dreta de L'Eixample, La Antiga Esquerra de L'Eixample, Gracia, Sarrià, St Gervasi-Galvany... which seem like good and safe neighborhoods. 
In addition, I look for extroverted people, interested in exchanging cultural bonds and cultivating a haven, a true home away from home. I'd love someone to go out with and even to get to know the city with. I must say I am a very excited, "cup half full" kind of person hahah. I love concerts, festivals and traveling on the weekends, maybe that's something we can bond over too. Of course, I look for someone responsible, organized, and respectful, to have a cooperative relationship, in terms of having each other's backs in case any emergencies arise.
One thing I must mention is that I have a boyfriend and would want to host him when he comes to visit, but that's something we must discuss later on, as everything will only be done if accorded by both parties. 
Oh, and I don't mind pets :)

Look forward to seeing you in Barcelona❤️

Xo, Pietra