If you are older or have mobility issues, the climb to the apartment could be an issue for you. There is no elevator (not unexpected in an older building) and the apartment is on the third floor (US 4th Floor). We managed this by trying hard to make only trip up and down the stairs a day. Also, the bath tub is rather high and requires some care and thought getting in and out.
Apart from that, this is a great place to stay in Edinburgh. We did a lot of day trips by train and the apartment is a short 10 minute walk from the Market Street entrance to Waverly Train Station . Also Richard provided a loaf of bread, butter, milk and eggs on arrival. Much appreciated after a long journey.
If you're an Outlander fan, you can see Bakers Close from the side window that looks up the Royal Mile toward Edinburgh Castle. That was the exterior filming location for A. Malcolm's (Jamie's) print shop.