I can boil this review down to two words: Stay here.
For those who have the time to read further, host Andrew is a delight; the room is spacious, clean, comfortable and bright; the location in Edinburgh is priceless. Finding a place to stay in Edinburgh can be tricky, but this is a no-brainer.
Thanks to Andrew and the very sweet Alexa for making me feel at ease and to Andrew for some great tips on places to eat and drink in the city. In summary: Stay here.