Love this apartment, it was perfect for my mom and sister and I, each room has AC and as long as you close the bedroom doors at night, the rooms stay nice and chilly, we had no issues with AC nor with the shower water, we didn't take long hot showers but were mindful of the water and it was fine. The house is modern furnished and has everything you might need for a nice stay in Rome.
The area of the apartment is adorable, the Il Siciliano cafe and gelateria downstairs is AMAZING! The square has lots of great restaurants on it. We love the Trastevere neighborhood much better than the tourist side of the river, it's still very close to walk to all the sites, we would highly recommend staying here!