The location is great for exploring Rome. A few things I would say is that it is incredibly noisy. There is a bar right below the apartment and it is open until 2am and you can hear everything.
Also, there are a TON of stairs leading to the apartment so definitely would not recommend for older people to stay there (there is an an elevator for luggage). Some small odd things about the apartment that should be updated (the furniture, uneven steps, bedroom door that won’t close fully). Pretty dark space as well and not a great common area. All that said, a prime location for exploring different cafes and restaurants (food in trastevere is amazing!).