The apartment it's huge and the localisation it's incredible, really close to the Fontana di Trevi, but there are a few things it could be improved. If you are planning to have a bath in the swimming pool, notice that the heating up system doesn't work properly so the temperature it isn't really comfortable. It was a surprise that such a incredible house didn't have a microwave.
The main shower pours water out of it and the water tap placed bellow the ceiling can't be turn off, so it's a bit difficult not to wet your hair if you don't want to have it washed.
The second shower it's into the swimming pool zone and you have to cross the water to use it, so it's not really practical.
Apart of these things, everything was ok!