Honestly you can find better accommodations for how pricy the airbnb is in Barcelona. I also had the worst check in experience of my life with the host. Admittedly, I didn’t fill out the third party check in form until the night before since I had been travelling. However day of check in, I repeatedly called + messaged the host asking if I can receive check in instructions, with no response. I let her know that she had sent the email to a random outlook address, but that wasn’t me or any of the other guests, but she ghosted me. If it wasn’t for the neighbors in the building opening the front doors for us, and us playing scavenger hunt to find the keys + eventually unlock the doors, we would have had no where to sleep. I would understand if the host was busy that hour but she didn’t say anything to me for 3 days, choosing simply to ignore her guests. It was only after 3 days of ghosting me about check in that she sent a check out message, ignoring all my pleas for instructions above. Would not recommend.