Paul and Sharon were great hosts. Highly recommend staying with them! The communication was fast and informative from the start. The room is exactly as shown and described. Even if it does not look like much on the first sight, try the loft bed! It is such a cozy place to start and end your travel days. And on the floor there is enough space to open your suitcase. Perfect for a solo traveller. Also the practical details make the difference: for example a lamp and sockets right next to the bed and a little mirror in the shelf. There were also some books about Edinburgh and Scotland (and some others I did not check). Just be aware that you share the bathroom with your hosts, so it might not be perfectly clean, just like your own bathroom at home. If you are fine with that, enjoy your stay at Paul's place!
The location was also great, nice neighbourhood and easily accessible by bus from/to both the train station and the airport. From the royal mile it's just a 15 minute walk which I found a comfortable walking distance even in the evenings. Arthur's seat is in close walking distance, so definitely recommend to go there and do the "climb"!