On the banks of Loch Long near to Helensburgh is Knockderry, a stylish house with bags of character and beautiful details. They often hire the whole place out for weddings which I think it would be perfect for. Not far from Glasgow airport where you could arrive into then make this your first stop before moving on to explore the west coast, they even give suggested coastal trip reccomendations on their website which I though were really good. Luxurious and spoilt, great food and beautiful décor. Dog friendly too. I also love that they promote stylish stag and hen party packages which a lot of hotels wouldn’t entertain. But this is the west coast way… hospitable, warm and open to any man, dog, stag or hen!