Roslyn House definitely comes under the description of 'Boutique'. The bedroom was beautifully decorated, with a stunning modern shower room. The room had views down to Tobermory harbour.
There was a Nespresso machine and tea-making facilities. Breakfast was already provided in-room on arrival, with cereals and pastries; and there was milk, yoghurt, cheeses, charcuterie, smoked salmon and butter in the fridge. There was a bottle of prosecco in there too, though we didn't have that for breakfast. There was also a large bag of crisps and biscuits. It was more than enough. There is no reception desk. Access to the property and the bedrooms is via an entry-code. There is plenty of on-road parking outside. It's around a 10-15 minute walk into Tobermory but be warned, it's a steep path, which made us puff on the way back. There are buses that go into Tobermory and back up the hill if needed.
There was an honesty bar downstairs, though we did not use this (particularly with the prosecco provided).
I would definitely recommend Roslyn House as a place to stay if visiting Tobermory and the Isle of Mull.