We spent a long weekend at Nadia's in Sydney.
Cleanliness - the studio was very clean and tidy, and there were cleaning products available if you wished to use them. The bedsheets, blankets and pillows were in good condition with no marks!
Location - with regards to the airport Nadia's house was fabulous, very close with one easy bus direct to the domestic terminal. It was a little further out of Sydney but there was a bus stop very close by with a direct bus.
Amenities - Nadia provides a simple breakfast, which is helpful if you're only staying a short time like us and was gratefully received. There are also other useful bits and bobs like oil salt pepper and milk. The toilet is indoor *thankfully* but there was a fab outdoor shower which we enjoyed using (bathrobes, towels and shower products provided!) There was also the usual kettle/toaster/microwave and a small electric hob.
Nadia herself was available and helpful :)