Ben's flat is situated in a great part of town, at the quieter end of Grassmarket right under the castle. The apartment is located inside an attractive old building but it doesn't look over the main Grassmarket "square" so late-night noise, whilst audible, is not an issue. It also helps that most of the local bars close at 11.00pm!
The apartment itself is basically furnished but has all you will need for a short stay. I can't vouch for the TV and soundbar combo as we never used it but the WiFi was good and the coffee dock most welcome. The double-bed was comfy and the bathroom finished to a high standard.
As for the host, Ben was always friendly and super-quick to reply to all communications - he takes the comfort of his guests very seriously and it's a pity that I didn't get to meet him. We had a minor plumbing issue during our stay and Ben pulled out all the stops to get it fixed (even though he was on holiday in France!).
All in all, I would recommend a stay at Ben's flat and we would happily return.