I had a fantastic stay at Stephen' place with 4 friends. It is an easy 20 min bus ride from downtown Edinburgh, and the buses come frequently (and newly accept contactless!) or a lovely 45 min walk largely through parks. The neighbourhood is very cute, with lots of shops, cafes and pubs. Communication with Stephen was flawless.
The flat was absolutely spotless, and well-stocked. We actually wished we had been able to spend more time inside! Alas, 3 days straight of Edinburgh sunshine demanded we stay outside. I would absolutely recommend Stephen's place to anyone with a group traveling to Edinburgh.