I stayed at Derek's place for three nights when my boyfriend and I visited Edinburgh. It's easy to get to and from the centre - it's a 20 minute bus ride and the apartment is very close to the bus stop. Leith is a nice and quiet part of town, there is a shopping centre close by and several restaurants and bars within easy walking distance. We didn't actually meet Derek, but it was very easy to check-in upon arrival and the apartment was perfectly clean. Towels were provided and the kitchen was very well equipped. The lounge of the apartment is absolutely huge - we didn't need the sofa bed, but the apartment would definitely have been more than spacious enough for 4 guests (there are two bathrooms). Overall very pleasant and convenient stay - thanks!