The location of Adam's apartment is impeccable. If you are here for the festival, it's so easy to get around from his place. Summer hall (a very good venue) is just 5 mins walk. The room itself, as many guests have mentioned, is indeed very small, having said that, the bed is quite comfy. If you want to spend some time at home you'll certainly use the common area.
What I enjoyed most is that Adma and his flatmate gave the guest 100 percent privacy and respect. They are both gentle and friendly. But that also means you'd probably not see them that often, which is a shame because I do love to get to know the locals more.
Overall, Adam's place is definitely a good choice for the festival. If you are a solo traveler and spend most of your time outside watching shows, this is the place!!