Hello @GusDC and a very warm welcome to the Community Forum and thank you for starting a meet-up in beautiful Barcelona. I hope that there will be others in the area that will be able to join you. 
For reference if you are a member, once your listing is completed you can also add your TrustedHousesitters profile on to your Forum profile by following the attached link, should you wish. This will then enable others to offer you helpful advice and feedback.
If you are unsure how to do this, or if you have any questions at all, do not hesitate to ask, we are all more than happy to help.
Also, remember you can use the spyglass symbol at the top of the page next to the TrustedHousesitters logo and search for any questions that you may have as they have most likely already been answered on here and of course if not then please just ask! 