The flat is great for a couple, with all you need for the short stay, it is hard to find better location, everything is very close to apartment. The host is very nice and friendly Italian lady that bring you some helpful recommendations. Of the cons, the flat feels a bit dark, and sometimes very noisy, you can hear street sounds and everything that happens in the building as well, could be a problem for the sensitive sleepers.
Host charge for late check-in, 20€ if you checking in after 9pm and 40€ after 12pm, so plan your trip accordingly or add this amount to your expenses.
Definitely would stay there again for a night or two!