Roger's flat was a great place for me to launch my visit throughout Spain. It's very convenient for 1st time travelers to Barcelona as it's situated on a major street (which comes in very helpful when asking for directions/orienting yourself).
Despite arriving well after midnight, Roger's mother was waiting for me door opened - which was a nice welcome to arrive to. She showed me the flat, including my bedroom & let me know that if I had any questions all I had to do was knock on her door which separates the residents & guests.
Although the flat is shared, you rarely see the residents or other guests.
As other guests have mentioned, the flat isn't the cleanest, but it's also lived in so it's not expected to be spic-n-span.
As far as communications go, Roger is very prompt when emailing. He was very helpful handling my delayed arrival and when I wanted to extend my stay was readily available.
Overall, it's a great place at a good price with very kind hosts!