A really nice a spacious appartment. With a balcony on the front, and a terrace on the back. The appartment is situated in a building where local people live.
Just across the other side of the street is the office of Weflating, so you will be able to contact them easily. Just in case.
If you will be using the front bedroom, which is also the most spacious one, be sure to close the balcony doors because during the week there is a lot of noise coming from the streets. Especially in the morning (traffic, clearing from the dumpsters etc.) but if you are waking up early, around 6.30 AM, you should not have any problem with that.
Besides that, a wonderful appartment with a great location to explore the city. I would recommend the Botanical Garden which is located on a mountain and can be combined with the Castle of Montjuic. Very nice views and if you loce nature, there will be lots of trees!