Maureen and Sally are excellent hosts, and their apartment flat at York Place is second to none in location and luxury.
In terms of features, the extremely high ceilings, decor and the grand piano stand out (if you play piano, the latter is enough reason to book this place above any other in Edinburgh). The rain shower was also fab. The place is super central, but the location is very quiet too, which is convenient to rest after a day of long walks up and down across town.
They were also very helpful and attentive to let us keep our luggage after checkout at their music shop next door (as we had a few hours gap until our return train). Also, the check-in method was very convenient, as we had a very late arrival.
P.S. And I totally encourage anyone to try some of the places in their list of recommended restaurants — we have great meals at a couple of the places they suggested