Edinburgh Castle Apartments and Suites were overall at a great location. We could quickly walk to any of the pubs / shops / restaurants on Rose and nearby streets. We even walked up to the Castle from this location, a bit longer of a walk - but nothing crazy. Train Station is also just a couple blocks away, and actually just walked our luggage from the AirBNB to the Train Station when we left.
The actual Suite was also great. We had a spacious living space, a small kitchen complete with coffee / tea / some cookies and the bathroom and facilities were clean and well stoked.
Getting in and out of the building was simple (maybe a little too simple in regards to room codes)
I would highly recommend this location to anyone traveling to Edinburgh!