This is a lovely, spacious, and warm apartment just outside the busy centre of the city, and very easily accessible from the New Town (buses also go to the Old Town). There are nice spaces for working and reading, and the high ceilings and big windows give a great light to the place.
The kitchen is very small if six people are staying, but it's perfectly adequate for say three guests (though it's a shame the twin beds can't be turned into doubles).
Susie is great at keeping in touch, and checking in is a doddle.