I contacted a few devs and seems that this weekend (6-7 of august) is a good date for a face to face meeting.

We have the availability of Matakrostes as venue:

Passeig de Sevilla 132, Valldoreix, Barcelona
https://guifi.net/VDXpgSevilla132

If you can join but you need a couch for the night, you can apply for it on this list :)

If you can't physically join, you can still participate via the IRC channel (#libre-mesh on freenode.net).

Ciao!

Ilario