My family (4 in total) stayed here as we pass through from Glasgow onto England. We had a fantastic time and this apartment was great for us to set up as a home base.
It was about a 15 minute walk from the bus station to the apartment and we were able to walk to Calton Hill, the castle and the Royal Mile easily from the apartment. The guide book provides a lot of helpful information about what is located nearby.
We had no issue sleeping 4 using the loft as the second bedroom.