My friend and I stayed in Jack’s apartment in early Mar 2016. The apartment was clean and spacious, which was definitely worth its value! TLDR: The apartment was as mentioned in the listing.

Location wise, being in the Old Town means it was very convenient to go New Town or the area around Grassmarket.

The apartment could be accessed via Lvl 1 from the street facing the New Town, or Lvl 4 from the courtyard leading to the New Town.
The apartment itself is well-equipped. It has a kitchen (c/w fridge) and has hot water at the sink and shower. The extra heater provided did help us get through the chilly nights!

I really enjoyed my stay and would definitely recommend this apartment for those visiting Edinburgh!