Colin's place is conviniently located in a closed, quiet street, just about 20 minutes walk from the centre. We spent four days in Edinburgh and didn't have to take a single bus.
The space is well decorated and was very clean and organised when we got there. Colin is polite and answers quickly. He welcomed us and gave many tips about what to do, where to go in Edinburgh and provided bread, biscuits and jam.
Highly recommended.