Radek is a lovely host, friendly and quick to respond. He gave a lot of good recommendations and clear instructions how to get to the flat. He let me check in earlier and leave my luggage for a little longer upon check out which I really appreciated.
The flat is just as described, very homely and comfortable. Close to Haymarket you can easily reach the old town in about 30mins. Bus stops and Lidl are just around the corner. The street is quiet at night after the pub on the corner closes.
The flat itself is ideal for one person, maybe also a couple. I appreciated the heaters as it can get cold at night. Kitchen was very well equipped, including tea, coffee and cooking bascis. Only real downside was the shower - although newly renovated it worked poorly with no constant water flow but alternating splashes of ice cold and burning hot. That made showering a real nuisance.
Otherwise I really felt at home and would always come back for my next trip to Edinburgh.