Apartment interior looks great. Nicely furnished. Location is pretty good, only a couple minutes walk to the nearest metro and a 24hr grocery shop opposite was useful. Takes around 10-15 mins to walk to Las Rambla. We were able to arrange a late checkout (evening) too which was really helpful and very much appreciated as we had a late flight. Amenities e.g. Shower, Wifi, TV, Air-con etc all worked great.
Only downsides were that some of the apartment's amenities could have been explained a little better, for example we had no idea there was a washing machine and cleaning equipment until the penultimate day (they're behind a door on the balcony of one of the bedrooms). It would also have been useful to have items like an iron/ironing board and hairdryer available. There's three flights of stairs up to the apartment - we coped fine, but some people might find it a bit of a struggle. A few tips on the local area would have been a nice touch too e.g. nearest supermarket, and a good spot or two to go for food.
Downsides are all quite minor points though and can easily be attended to. Overall, we had a great experience at the apartment and would recommend it.