I was on a solo trip back to Edinburgh and grateful to have come across Assean's place. The room was as described, decently clean and spacious with huge windows for natural lights. The location was perfect, situated right across Haymarket train station, tube, and bus station. This made traveling within Edinburgh, or a spontaneous trip to places close by such as North Berwick really convenient. The city centre was within walking distance. Communication with Assean had also been seamless throughout the process, including the check-in and check-out.
However, being close to the stations also meant it could get quite noisy at night. The building seemed rather old, so soundproof was not amazing. Hence, it may not be suitable for light sleepers. Another thing to note was that this place operated like a flatshare, meaning the cleanliness of the common areas, i.e. bathroom and kitchen heavily depended on the existing long-term guests (there were 4 other rooms if I remember correctly). While the cleanliness of the room itself was decent, I was a little hesitant with the bathroom and kitchen and hence minimised my usage of these areas. I had reflected these to Assean, and he was very kind and open to feedback. I believed that Assean would handle the matter accordingly.
Based on my experience, this place is a good deal for backpackers/students who are not very particular with cleanliness nor light sleepers. As for me, I do think that I would stay here again if I'm ever back in Edinburgh :)