This apartment is absolutely adorable! It was the perfect floor plan for my group's needs (the person who gets up at 4:00 a.m. slept in one room while the two who get up around 7:00 a.m. slept in the room on the opposite side of the flat). The location is superb being quiet but close to the Holyroodhouse end of the Royal Mile. The key situation is a bit tricky. Unless things change, you'll get four keys. The silver, modern looking one with the round head is used to get into the building and the gold, antique looking one is used to get into the apartment (via the top key hole, not the one by the handle). I'm not sure what the other two are for. Unless the lock gets changed like I suggested, be prepared to spend extra time locking and unlocking your door every time you leave and come back. I only successfully locked/unlocked it once while my dad usually got it to work with a little persistent jiggling of the key in the lock for thirty seconds or so. One time when we had no time to waste, it took us about fifteen minutes to get it to work, so that was a bit frustrating. All in all, though, we were pleased with the stay!