As a buyer it wouldn't put me off too much that you were selling it so quickly. Life happens. People get new jobs, divorce, etc.
BUT....you need new photos.
Flowers in pots out front, a wreath on the door, some fresh flowers or herbs in colorful pots in the kitchen to make it feel cheerful and inviting.
Stow away absolutely everything related to the cat.
You need some color in the bathrooms, which can be done with some fresh hand towels and candles. Also, no one wants to see the owners' toiletries, especially in photos!
All clutter must also go. There shouldn't be one item of the owners' clothing visible other than in the closets. The only thing you want on that kitchen table is a bouquet of fresh flowers or a colorful tablecloth. I'd clear everything out of that bottom open cupboard too. Same goes for the pile next to the sofa.
I'd pull the duvets all the way up on the beds and add decorative pillows. No one wants to see the actual pillows the owners are sleeping on.
I'd move that black chest from the entrance to make that space feel bigger, too.
I'd do all this and then have the photos redone, refresh the listing and lower the price by a bit at the same time to reach new buyers.