Grzegorz is a super nice and friendly host with an equally sweet dog and you will have everything you need and more.
The place is really well connected so that you can reach it with several bus lines from Edinburgh's city center (for example lines 8, 14, 16, 19 and 29) and from the airport (e. g. line 200) and the sea, Cramond Island and the Royal Botanic Garden are also near. (I recommend getting a Ridacard when you want to stay around a week or longer. You can buy it near the Edinburgh Waverly station, it costs around 22£ for a week and you can use almost all buses and trams in and around Edinburgh city center as often as you like.)
The only thing worth mentioning to keep in mind is that the floor panels in the house are a little squeaky when someone steps on them. So, if you are a light sleeper and you wake up easily, you maybe should pack earplugs.
In conclusion, you'll get the best value for money and will experience true hospitality.