We stayed 9 days in July 2012.
My husband was attending a conference that took place in the center on Rambla Prim.
For us this was a perfect place ( I am sincere when I give it 5* rating).
Walking distance to the conference. All the privacy and accommodation of your own home and very affordable. There is a bedroom with double bed, second bedroom for at least one, maybe 2 people (did not check that out) and a large sofa in the living room. So several students can share the flat.
It is nicely decorated; ther is air conditioning (but as we prefer to safe energy and as it was not too hot we were happy to just leave windows open and have a nice breeze). Hot water provided all day and night.

The location is not only perfect for work : the beach is just two (small) blocks away. There are shops nearby : a shopping mall, a mercat and the wonderfull rambla de poblenou.
So it is also perfect for a family with children, or friends going on a holiday.

Bus 41 takes you into town with a view, metro L4 keeps you cool and connected to all touristic places.
And at night it is quiet. Imagine that in Barcelona.

On top of that a hostess who is radiating friendliness, helpfulness and joie de vivre.