We had a great stay at Sarah's place in Edinburgh, there is easy access through a lockbox. There are a number of flights of stairs and no lift. 4th or 5th floor? We had backpacks so it wasn't an issue for us but if you have big luggage or mobility issues it may be something to consider. The apartment is very central, the Edinburgh castle entrance is about a 10 mins walk away. There is a small supermarket about 5 mins walk away. We struggled slightly to turn on the heating when we arrived but eventually found the apartment manual in a side cabinet and worked it out. FYI temperature is controlled by the small dial on the mantle. highly recommend Sarah's place for an Edinburgh stay :)