Summary: We found Sonia and Chris' apartment in Edinburgh to be a delight to stay at despite the climb. So much is great about this apartment that I am not sure where to begin but eventually broke this down to; owners, apartment, city.
We found Sonia and Chris (owners) to be great communicators via the AirBnB platform ahead, during and after our stay ensuring that we were happy. They then took this to the next level with a website / web app, basically a digital guide, including check in/out instructions, advice about activities, food and (importantly for us) child relevant prompts.
Their apartment was as described in the images and content we saw prior to booking; 3 bedrooms, 1 nursery, living room, bath/shower room and a kitchen. The bath/shower room was good with great pressure on the shower, the bath tub was huge (big enough for two) but consequently took a while to fill. The kitchen was fantastic, good space for dining as well. Whilst the cutlery draw eluded us for a while (hint it is literally below the stove top!) all the utensils, dinnerware and cookware required was present somewhere within the many cupboards. Living room was great for relaxing, gave the TV a quick try - seemed to work fine as well as offering smart options via a FireTV device. For those concerned about sleeping the beds were both huge and comfortable, road noise was minimal on the road facing side during our Sunday to Thursday stay.
The apartment, located near Haymarket station, is well positioned to take advantage of the many interesting options within Edinburgh. It is a short walk to the city centre where the majority of cultural attractions are; whilst these can be looked up on the internet we found S&C's guidance to be useful whilst on the go. There were good eating / drinking options local to the apartment, grocery options were limited to express/local shops consequently we booked ahead for an online grocery delivery to the door on arrival day - top tip.