Really super flat. Spacious, warm, clean and had everything we needed. Great value for the location which couldn't be any more central for Old Town Edinburgh. But as is to be expected for a city centre (and not being far from the university), be prepared for the noise from the street, particularly if staying in the front bedroom. Also, as with most tenement buildings there is no lift and about 80 steps to climb, so expect to have a good work out.
The hosts were incredibly helpful and gave really clear instructions on how to access the property. Many thanks.