The apartment itself is really nice and looks same as the photos, however, before you check in they will ask you questions as if you're attending an interview about why you're coming to Barcelona. They will also send you rules that will be controlled by technology equipment such as a noise control alarm.
Check in is very easy, everything was clean and organized.
You will pay a hefty fee for cleaning and they will have the audacity to kindly ask you to clean up before you depart, do some dishes, take the garbage out etc (it's not mandatory but they do ask for it). Those annoying things are the reason I gave them the 3 stars, because even though it is a holiday home, at times it felt we were monitored big brother style.
I have to say that they are very cooperative, helpful and have great customer service.