We had an amazing stay.
Check-in was uncomplicated and the place was easy to find, the host is very welcoming and would always have been available, if any issue had appeared (which didn't happen).
The location is absolutely perfect, as you can reach any major sight and the beaches either on foot, or via short bus/metro (subway) rides, and due to it's build (front street level, back semi-underground), it is quiet and well tempered. It takes a bit of practice to get around the apartment at night, but due to the straight layout it is very easy to get used to.
A lot of nice Tapas bars can be found on a dedicated pedestrian street a mere 2 minutes walk away, metro and bus are 5 minutes away.
The room has a basement terrace, which is ideal for having your coffee in the morning, or a wine in the evening, and a dedicated bathroom is available for the guests.
It is the perfect place, if you want a quiet stay, good food nearby, and easy access to the main parts of Barcelona. Get yourself a 5 days or monthly pass for the public transport, and you can enjoy every corner of the city in no time and without effort.
Be aware that you are sharing the apartment with the host (late evening and night), so this is not a location to have loud parties at night, but for people who like peaceful mornings and evenings.