Amatter is in Vitoria. Tap the map or the "Get directions" button to see the exact location and the route from your position.
Yes, Amatter's official website is amatter.cc. You'll find the direct link in the "Website" section of this listing.
On this listing you can see "Other cafés nearby" right below, sorted by proximity. You can also open the full cafés in Vitoria page for the complete map ranked by distance from your location.