I traveled to Barcelona solo in between a family gathering in Germany and visiting friends in London. This situation was perfect because it allowed me to travel on my own, but feel as though I had kind friends to give me advice when I woke up in the morning about what to see and do. Staying with Carlos and Reyes is less like renting a room and more like staying with cousins or family. They also have a charming son who will talk your ear off. Even though the room is tiny, the apartment is big, attractive and centrally located, just a few minutes walk to Ramblas. The room felt just right to me as one person with one person's luggage. If you decide to share the room, I would recommend you be on good terms with that person ; ) Street sounds do filter into the room, but that did not bother me and I slept very well. I would say the best part of staying in this location is being able to eat the delicious breakfast Carlos and Reyes prepare every morning and talk over your plans for the day. This proved very valuable and they helped fine-tune my visit. Also, on a side note, I was told by more than one person not to be in El Raval after dark (apartment is technically in this neighborhood), but this is in a very nice location of the neighborhood and it is really not a problem.