I may not have been able to get to Holyrood as the Queen was in residence, but I did go to see the Royal Yacht Britannia.
It is certainly very homely in many ways, so I can see why the Queen & Prince Philip loved it so much, and were upset when it's working life was over. Most of the royal area had been designed by the two of them, which was very nice to see.
The Lounge
The Queen's Study
The Dining Room
From Pitcairn Island 1971. Signed on the back by every inhabitant
Officer's lounge
Prince Philip's Bedroom
The Queen's bedroom
For the rum ration
Sick bay