The „cozy“ apartment turned out to be sad and dark, with bars on the windows.
This place could be easily spruced up by:
providing a more comfortable couch
fixing the kitchen faucet
Providing a coffee maker
Providing a second bedside table with lamp in each of the bedrooms
Nice touches here and there would also help, eg throws in the bedrooms, additional pillows, shampoo (not just shower gel). I.e. By giving it some of the lovely touches found in Airbnb’s that are not just there to make money. Even a small gesture, such as putting out a loaf of bread for your guests can go a long way.
On the positive side, the location is very good, and the beds are comfortable. If the host invested only one night‘s income (an exorbitant, but market-conform 400 Euro) this place could give the impression that it’s hosts actually cared for its guests passed their wallets. I would not recommend staying her.