We stayed at Trystans for two nights and had a great time in Edinburgh. Pros: location! Best possible place you could be. Also loved the bar with discount below. Nice big room and we barely saw anybody else in the apartment. Cons: the bed is pretty bad, you can feel every spring which doesn't make for a great night's sleep. And the noise. I thought "I'm in my 20s, love loud music, and live right in the city so it'll be fine" but it was more than I expected. The bass is crazy loud and the music stops at 3 or so, but starts back up (not as bad) at 6 am. So overall it's worth it, especially for being able to walk to everything, but keep these in mind if you don't do well without a good night's sleep like me.