Your sit and location looks dazzling and you have done a nice job detailing what you need from a sitter and what they can expect. So well done on that front.
We usually publish sit dates ranging from 2 to 6 weeks and we do it 6 months out. We have had great luck connecting with sitters scheduling that far ahead and those sitters are usually full-time, highly regarded nomads filling their schedules up to a year in advance. Unless such a sitter has their calendar filled out already and your short 5-day sit connects some longer sits, publishing your dates 8+ months out might prove counterproductive.
A title is the first chance to pique a sitter’s interest. “Looking for cat lovers!” Is not very piquing and is too short. You have 80 characters to use and a lot to convey: 1 older but both easy cats, nearby amenities, gorgeous home, VERY good local public transport, … I would definitely rework that title.
Your profile picture is of a room. It is a very nice room and maybe enough so to pique interest. But your priority is cat loving sitters so I would use the photo of Mia perched on the scratch post first. I’d also add photos of the house from the outside to give some sense of the neighborhood. Photos of the upstairs rooms accessible to a sitter are appropriate. You might have to sacrifice some of your too many photos of Mia and Leo even though all of them are quite nice.
Your location description is a bit thin. Adding a few details about distances to the CBD with bus times, distance to MEL and bus connections and distances to beaches or nearby attractions you would recommend would all be useful and interesting.
“We will prioritise sitters with several reviews and solid cat-care experience.”
Unnecessary to state as both obvious and redundant. You open your profile saying the same thing.
“Ideally, we’d like to meet in person before confirming the sit but understand it might not be possible.”
Unless you are going to strictly use local sitters, this wish is not practical and may be limiting or off putting for some sitters. It tends to suggest that your selection process is time consuming and most of the vocal, experienced sitters on this forum typically express an unwillingness to be unduly strung along by “indecisive” hosts.
“*As of Dec 2025, we haven’t booked our flights yet.”
You will read here that some sitters will not accept a sit if the host has not booked their flights but I would remove this statement for now as marginally useful and something to discuss with sitters who apply near term. If you’re inside 3 months without flights booked, putting this statement back in will be very useful to potential applicants.
“*Please note: the garage and master bedroom will be locked, as well as two spare rooms.”
As a host myself, I think what you list in your profile in terms of rooms and photos of those rooms should be fully available to sitters. Your profile indicates that parking is outside and you have no pictures of your master bedroom or spare rooms. Therefore none of the locked rooms need to be mentioned in the profile. Stating that they will be locked may be read as inhospitable.
One note on the garage is that electric circuit breakers and some mains are located in garages in my neck of the woods. Blocking access to those would be problematic but, for a 5-day sit, you will probably be okay.
In that same vein, “Our 5-bedroom* + study home” is technically accurate but you’re closing off much of it. I’d change that to “Our large home” and let your profile pictures do the talking (something they do quite well).
The catio looks lovely. If it is securely screened in so that your cats can use it unsupervised, you maybe want to make that clearer.
Otherwise, your profile looks perfect 
Thanks for letting me know, I had no idea!