Upon our arrival we were met by Annik, and we were advised that there was a mix up with the accommodation. Whilst Andrea and Annik were trying to resolve this issue, we found their customer service exceeded our expectations. Annik accompanied us in a taxi and checked us into a hotel and sorted the issue out overnight. We were then checked back into a neighbouring apartment for the remainder of our stay.
Whilst we weren't too bothered about this, they refunded our first night's stay in Barcelona.
Thank you Andrea and Annik, as first time tourists to Barcelona, it comforting to have great hosts who go over and beyond.