As a con, in a normal Irish rental market, you'd lose about 90% of prospective tenants I would imagine. We simply don't "do" unfurnished rentals in my opinion. One of the benefits of renting is that you don't need to lug big items like beds, washing machines, dryers, fridges etc. from A to B to C, and if the fridge breaks down, you know the landlord is on the hook for it. I know I certainly would be telling you to take a running jump anyway, especially if you're charging market rates.
However, with current crisis of rents, I'm not surprised landlord are being creative like this. It's an expected response to the rental cap really.
Biggest "pro" is obviously you are absolving yourself from paying for and managing those items. However, you say you wouldn't deal with the "hassle" if the washing machine goes............that does leave you open to tenants buying in cheapest E50 washing machine/fridge and saying "oh well" if it leaks and destroys your flat and the one underneath. At that point, it's penny-wise, pound foolish on your part.