Thanks for your replies.
Actually, I'm rather after dog friendly parks, places and long walks than after dog friendly accommodation as I reckon the latter will be the smaller problem. Where is the point in traveling with the dogs if you can't take them for long walks and have to leave them behind if we want to go walking?
I checked with the local council but unfortunately, it's just small parks where you can go with dogs. No nice long bush walks, no adventure and of course no leash free area, at all :-(.