This is one of the loveliest places I have stayed. Everything from booking to check-in was very smooth. It's located close to His Majesty's Theatre, so make sure you book in to check out a nice performance. The city shopping district and railway station is a few minutes walk. You also have two pharmacies close by.
The place is tastefully decorated with a nook to quickly send out urgent emails. Three's also a cute balcony that gets some sunshine through the large sliding glass doors. I managed to make a few meals during my stay as the kitchen is nicely equipped.
I would definitely stay here again when I'm in Perth.