I have stayed in this apartment on two occasions and certainly would again. It is very clean, comfortable and well-located. San Lorenzo is a quite central area, though without being busy or overly touristy (it has many restaurants and cafés but preserves a good local vibe, without the kind of rip-offs like you might see in e.g. Monti or Trastevere)
Pina kindly provided a complementary bottle of wine as well as snacks, tea, coffee, water, olive oil etc.
There was also excellent communication and I was greeted on my arrival.