The location of the property is very good and convenient.
However, there's no sound isolation at all - I guess it's because of the building being historical. So, you hear each other a lot, all the other people in the building and the sounds from the outside too. Our apartment was on the ground floor, so some people from the outside would sit right outside our window/wall and smoke cigarettes - and the smell from them gets into the apartment immediately.
And every time someone unlocks the main entrance of the building door, you get an annoying loud sound as well.
Also, it felt like nobody has been there before us for a while - it had very dusty floors with some hair on them. And all the dishes in the kitchen were quite dirty too.
You can only unlock the apartment with an application on your phone. And to install it, you have to have a sim card that works in Spain, which not everyone from our group had. Plus, I'm personally not a big fan of this in terms of security measures.
The kettle wasn't working and there was no iron. However, we messaged the host and they brought us a working kettle and and an iron within 1 hour. Which we really appreciated.