Just came back from a nice citytrip to Edinburgh. Tristan's place is very centrally located, so you get very quickly to the city-center and the interesting spots to visit. The room is clean and spacey. Be aware, that when you stay over the weekend, at night it can be very noisy with the 2 bars underneath.
Although we only met Trystan in person when we left, the communication over e-mail was very quick and efficient.