Neil's apartment is very well located, far from the crowds but close enough to Edinburgh's neuralgic center. It is a simple 1 bedroom flat with a sober living room. It's in a third floor, accesible from the community stairs which didn't look too clean, and although there is an elevator, it only reaches even number floors.
About Neil, he gave us a very friendly welcome and we had zero problems when we needed to contact him. In addition to that, because our flight departed later on the checkout day, he spoke to a friend of his so that we could leave our luggage in a shop near Waverley and continue to explore the city until we headed for the airport.