Sid was a very polite and warm host. When we arrived he gave us a nice tour of his appartment. We immediatly felt at home. The room we stayed in was quit big and well equipped.
The appartment's location is excellent, less than a 10 minute walk for the Ramblas.
You don't have to worry about privacy, the room has it's own lock and as mentioned earlier Sid is a very polite guy. he doesn't bother you unless needed. He even arranged a cab for us to pick us up and drop us of the airport.
I would certainly recommend a stay at Sids to my friends and family.