Our company, the Short Stay Group, exclusively operates Protected content apartments in Barcelona. In the high season (April 1st - Oct 31st) we mainly sell shorter stays. From Nov 1st we can rent out our apartments for longer periods (2 weeks to 6 months) at very attractive rates.
If you are looking for something just send me an email at Protected content and I will see what we have. Always mention your budget, the area(s) you are looking for, the size (nr. bedrooms) and what features you would want (elevator, washing machine wifi etc)