I had a great stay at Paolo's flat. Paolo was extremly candid and helpful with a kind of "customer-oriented attitude". Infact, Paolo tries his level best to make your stay comfortable.
Also, contrary to what I read in some reviews, the location is, IMO, pretty good. You've a few supermarkets, restaurants, takeaways and groceries shops in the surroundings. Furthermore, the Simply Supermarket offers ready-made food that can be warmed up in the oven at home.
Lastly,if you want to go to the metro stop "bande nere", just catch the bus 98. Hence, no need to walk 1km. Likewise, when you come back. Please let me remind you that whenever you buy a metro ticket, you're entitled to use any bus - just check what's written on the ticket.