We stayed for a week in this flat which is very conveniently located near La Ramblas and 1min walk from Liceu metro station in the Gothic Quarters. The flat was exactly as shown in the pictures on Airbnb website. We walked to most of the popular tourist sites in 15-30min or can easily take metro/buses/taxi near the apartment. The main transportation hub at Placa Catalunya is only about 7-8min walk. There are also many small supermarkets nearby (some are open 24hrs). The Gothic Quarters are great to stroll around during the day and at night as well.
Pablo and Sofia were very responsive to our questions and there were a couple of minor items which were quickly taken care of.
One thing for seniors to note is that there are about 3 flights of stairs to walk up and there is no lift/escalator. Also there is a step up to get into the shower.
We definitely would stay here again on our next visit to Barca!
Other tips: There are many tourist restaurants near apartment but those are not the places to go. For really good tapas head to Cerveceria Catalana or La Flauta. Also Patisseria Hofmann for croissants and Joncake for artisan cheesecakes. Luigi Restaurant for great wall oven pizzas and La Boqueria Market for fruits and refreshing fruit juices.