My farther and I booked with Heleen & Rodrigo for our March trip to Barcelona. Excellent response times and communication. We originally booked an apartment closer to the city center but Rodrigo explained he couldn't accommodate guests there any longer, so arranged us to stay in another apartment of his that was available that week.
The space was very clean and and we were made very welcome. The walk into the city center was longer than where we originally booked, but as this was a sightseeing holiday, there was differently things we saw additional to the normal sights as we explored the local area.
I would recommend this apartment to all family and friends that are looking to stay in Barcelona and I would return myself.