Kate's apartment is an amazing place with spacious bedrooms and high ceilings. It comfortably fits eight adults. It is in a great location next to Leith Links (Leith community croft and cafe) and just a 10 min walk from Leith food market open on Saturdays. Portobello beach is 3.5 km mostly along a footpath (refreshing swim). It is not far from Water of Leith walkway which takes you nearly all the way to the Royal Botanic Gardens (free entrance).
There are lots of nice independent cafes and eateries (we liked Hideout cafe and Orinico Latin food take-away). Teutchers landing looked good as a local pub with a terrace along the water, although we visited to have a look in the end we did not stay to have a drink.
It is close to a number of bus stops to take you to other parts of Edinburgh (and to the train station).
The apartment is a little tired and need some attention. It could also do with some more kitchen equipment to make it work for ten people.