Stay here if you are visiting Barcelona. We lived here for four months and are sad to leave Marta/Quim and this place. Great location. Quiet neighborhood and very relaxing. Right near the L1 and L2 lines of the metro which takes you to pretty much anywhere (5 minute walk to each). Walkable to most touristy places as well. Farthest walk in around 40 minutes to the beach but, we basically did it everyday. As you walk there, you can hit a lot of touristy places on the way too. If you are a university student, perfect place to stay. It is a 10 minute walk to campus (of Univeristat de Barcelona).
The house is perfect for two people. Lots of storage for all of your stuff. Kitchen has all the amenities that you need. Bathroom is decent sized and did its job.
Only downside is no fresh air/sunlight. There is a window but, leads out into an indoor part of the building where you just hang your clothes. But, we stayed here four months and we were fine with it!
Marta and Quim were the best hosts. Welcomed us the day we got here and gave us a lot of tips of the area and Barcelona in general. We would not have survived without them!