Hi,
Generally yes, you should be able to deduct expenses.
The way it works is pretty much the same in all OECD countries actually, the principles of tax collection are pretty harmonized around the world, but local details and exceptions may vary wildly - always consult a local tax advisor!
This is how it works:
I most countries occasional extra income is exempt up to certain amount. So that you don’t have to file tax returns every time you sell old computer or rent apartment for a week.
However, once it becomes “regular business”, then it starts behaving like any other business: you pay income tax and generally you can deduct all costs of business - that means all the repairs, purchase of equipment, furniture, etc. Even electricity bills, Netflix invoices, etc.
And actually in most cases you should be able to deduct the “costs” of the apartment itself. Not all at once, but you put it as an asset into your business and you do “accounting & tax depreciation of the asset” = basically you deduct a portion of the purchase price every year.
Watch out: if you use the apartment also for your personal needs, ie. not solely for AirBnB rentals, you can deduct the costs only proportionately. So if you live in the apartment 70% of the year and rent it for 30% of time, you cannot of course deduct all the costs, but only the portion attributable to those 30%.
Watch out: tax law of every country is a minefield full of exceptions and special rules - I described general principles, but always consult local tax advisor, to take you through the minefield.