I stay in Rome quite often and this is one of the better apartments I have found.
The location in the centre of Trastevere is great for access to lots of bars/restaurants and easy walking distance to most of the sites in Rome. The large and very private balcony is a bonus and the table means you can eat and relax out there. Alessandra was very welcoming and had lots of extra touches with coffee pods, cold drinks and snacks.
It is small but feels spacious (helped by the balcony). Really best suited to 1-2 people. However, there is a single fold out bed that an adult friend of mine slept on for a few nights and said was a very good night sleep. And you could also have a short person sleep on the sofa.
Reasons why I say this is better than many apartments:
1. It is up two flights of stairs but very easy and wide stairs
2. The balcony with table and comfortable chairs
3. Washing machine (definite bonus)
4. Nespresso coffee machine and pods
5. A big shower with good water pressure and a glass screen (trust me, this is important and hard to find in Rome)
6. Very comfortable sofa
7. Very comfortable mattress on the bed (also hard to find in Rome)
8. Good air-conditioning that was super quiet
9. No street noise, and very little noise from neighbours or within building (a bit of noise of from apartment above, but nothing to bother about)
10. How it looks on the website and the description provided were exactly what to expect.
I definitely hope I can find this place free when I can back again to Rome.