The host (Manel) was amazing. He gave us good recommendations which made our stay in Barcelona better than expected, specially the restaurant recommendations.
There were 4 bedrooms, 2 with double beds, 1 with 2 single beds and 1 with a bunkbed. Which was just right for our group of 8 people and my back was not sore after sleeping. Which sometimes happens because I have a weak back after constant sport injuries.
The price for the apartment was also good.
The only thing that I was not so fond of was that there were no locks on the bathroom doors. But that was the case for all 3 apartments I stayed in in Spain. So I think it is just a culture thing.
If I travel to Barcelona again I am staying in this apartment except if I am travelling alone or in a small group then I will ask Manel for recommendations.