Great flat, very comfortable with everything you need. It is nicely decorated,spacious, clean and not too far from the centre. The bus stop is just outside the flat if you do not want to walk and it takes you to the airport in 50 minutes for £1.50.
Derek is a very good host and welcomed us with muffins (always a nice touch!), telling us where we could go and providing us with maps and brochures.
There are a couple of restaurants downstairs if you don't fancy cooking (the indian restaurant is good, with big portions and naan bread the size of a pizza!).
We really recommend the flat to anyone visiting Edinburgh and we would happily go back if we have the opportunity.