@Dariusz22
So, I looked at your listing... Just a few comments..
It looks ok. The lighting in the photos could be better, but I don't think that's what's holding you back (although photos are important). The description reads pretty well, although in the "the space" category you didn't write anything about the space, just how close it is to the airport and beach, which you repeat in the next section (credibility?). But also I can't believe that's what's holding you back.
Price-wise, I did, trial check for 3 people for the next few days, and it's 28€ per night, which is so cheap, it's almost free (7€ per person per night). Might be a bit too cheap. But I also think that not likely your main problem here.
I think you mainly have 2 things working against you, the first being you have no reviews or history, so you're not showing up on the first few pages of search results.
And even if they find you.. No reviews, which is a red flag for some (although your listing looks reasonably credible).
But your prices are "almost free" (unbelievable?). This in combination with no reviews and anything imperfect in your description is problematic.
Plus, people are still reluctant to travel.. and when they do, they need to be sure.. Winter's coming, Europeans are going to be looking for getaways soon...
You really need some good reviews. Take really good care of your guests, make sure they're happy. And I'd raise your prices a little. Maybe put up some better photos. And make your description really clear and perfectly written. Don't repeat yourself.
Then just be patient.. I think...