In reply to Flinticus:
Not the Highlands, but I spent a week here (4 adults, 4 children, 2 springers - one room spare)
https://www.visitscotland.com/info/accommodation/dunrod-p1058861
Tonnes wildlife (peregrine flew over when we arrived!), massive living room with a roaring fire.
Excellent value, 10 mins to a beech, The Merrick not too far away, Kirkcudbright close.