We had a fantastic stay at Richard's place in Edinburgh. He was really nice, offered us tea and provided tips and suggestions to explore Edinburgh. Altogether Richard and his flat provided a homelike experience.
A tip for future travellers to Edinburgh: When taking a bus in the city, have the exact fare (£4 for a day ticket) ready as the driver cannot change. Public transport by the way takes you everywhere from Richard's place, and back even at a nightly hour.
If any of us ever return to Edinburgh, we will make sure to stay with Richard again!