It's a nice cozy place about 10 minutes walking from the cathedral. It's not the easiest walk, because you have to walk up the hill. So you might want to take a cab when arriving with heavy baggage. You'll get rewarded with a nice view though!
We were 6 people and the 3 bedrooms were perfect to fit us all. I guess you could fit a 7th person on the couch. The living room was spacious enough. The apartment was super clean, all the amenities were there and we could simply arrive and enjoy Girona.
They have their offices not too far away from the train station, where you pick up your keys. When returning the keys we were a bit late so that they gave us a ride to the train station. Super friendly people! So thanks again for this!