My wife and I thoroughly enjoyed our stay here. It is very conveniently located, with a variety of restaurants within a few blocks. The space is bright, clean, and well maintained in all respects. Many Americans, including us, sometime feel European flats are a bit cramped for our tastes. We did not feel that here. Every room is more than adequate for its intended use. The bed is ample and extremely comfortable, a "must have" after a long day walking Edinburgh. The kitchen is fully equipped, including a small washer/dryer. (It did take us a bit of effort to sort that out, but once we did it worked fine.) While we did think of a few things that might be added, Martin politely accepted our suggestions.
Some may be uncomfortable with the narrow lane on which it is located, at first glance. Any discomfort we felt was instantly allayed when we stepped into the flat.
Martin met us personally on check-in and walked us through what we needed to know to properly operate the equipment in the flat. He was in contact throughout our three day stay with tips, suggestions, and quick responses to our few questions.
Mobility impaired guests should bear in mind that this is not a ground floor unit but what we in the States would call a second floor unit.