We stayed six nights at Gemma's and had a fantastic time. The location is little off the main tourist area (15 minute walk to Las Ramblas, for example), but there are many excellent restaurants and cafes right there, with more of a local than tourist flavor, which for us was a big plus. The apartment itself is comfortable, spacious, clean, with a really nice rooftop patio. The pictures really don't do the place justice. We spent far more time just hanging out and relaxing than we had planned. If we return to Barcelona, we would certainly hope to stay there again.