First of all, this is one of the places that actually represents the spirit of Air BnB - a private residence with space that can be used for guests.
Seb's place offers privacy, convenience, and though we didn't make use of it he seems very willing to talk about things to do and see.
What really sold us on this stay was timing. We hadn't planned well, and the other places we wanted to stay weren't responding. Seb responded right away, which was an incredible relief. The bathroom was clean and separate for our use just like he said. He did have the other room occupied with guests at the time, as well, but we only ever saw them once, when we wanted to use the bathroom. Even though we enjoyed the luxury of air conditioning we did not sleep well. The futon couch was a bit stiff and the Murphy bed was a bit squishy.
Close so many things: las ramblas, gothic quarter, a 30-40 minute walk to Barceloneta. it's also very close to the Drasenes Metro station that can get you to the Montjuic cable car as well as placa Catalunya, pasieg de gracia, and others.