First of all, let me start by saying that our stay in Edinburgh was great, and the location of Jane's place was a huge factor in that. It's right in the center of the city, and you have lots of things to explore no matter which direction you go. I think this is also one of the biggest factors for the price.
The place was definitely cleaned prior to our arrival. Everything was prepared, including all the amenities you would expect. I know it is a historic building, but I have to say using windows was really wonky. They would not stay closed (they would slide down. On top of that, the electric heater/boiler had some kind of electronics error, which meant we could not use it for a good few hours. My friend actually went to sleep in her coat while I was trying to find a fix for the issue, which I finally did after googling the model instruction manual.
The kitchen was greatly equipped and that would definitely be handy for anyone considering a longer stay. There is an oven, hobs, microwave, dishwasher, toaster, and plenty of good pots and pans.
Something that was not a big deal for us, but what surprised me, was that there was only one blanket for the bed for two people. There were some weird dark-ish spots on the ceiling above the shower, so I'd keep that in mind if someone has a super-aggressive allergy with mold.
Overall, despite the few quirks, I would probably book the same place if it were available. Booking the apartment and the whole communication process with Jane and her team was very pleasant, and I was always assured they were available if we needed anything. Would recommend :)