Third time staying in Edinburgh and this was the nicest AirBNB to date. The space is spread out over two floors. The beds are your standard double for Edinburgh (i.e. not the most spacious), but there is also a sofa bed in the master bedroom. All in, you could sleep 6-7, comfortably, and 9 if you push it.
Most everything is new and it is very comfortable. The master bath is amazing with a shower room and bath tub with two skylights. The living room is cozy with large screen TV and comfortable seating.
The only downsides are top floor unit in a building without a lift (which is disclosed; I did not mind, but anyone with physical limitations may struggle) and lack of a coffee maker, which could be remedied with a £10 purchase. As the rental is new to AirBNB, I expect that will be taken care of and I recommend this place.