Great studio, really spacious - loved having the extra room and the dedicated spaces you don't often get somewhere like this. Lovely to have the welcoming bread, fruit, granola etc. And there are other extras like the DVD/Blu-Ray collection, board games if you're spending extended time there. The studio is in a nice, quiet neighbourhood, a 15-20 min walk from Devonport village.
Quibbles are (some are simply the nature of the place and not something you could easily change): there is early morning road noise below from Jim Titchener Parade (I was in the area on business so up by then anyway); as others have pointed out the skylights and more translucent curtains mean it can be lighter than you're used to (I'd seen that and just slept wearing an eye mask - could be an idea to have some for guests?); and there is no direct heating or heating controls within the studio (the central heating is for the whole house, including this studio underneath, but that means it's only on if it's been turned on upstairs or if you asked - though of course if they're out or at work...).
On the whole, I'd definitely recommend Tracey's place. It had a lovely feel - must be gorgeous in summer - heaps of space, was very convenient, and excellent value for money.