This is the place to stay in Rome!
Great location in center city, very nice and responsive owner, beautiful apartment with modern facilities. Large, bright, and clean. AC, wifi, TV, clothes washer, etc. all worked well. We were especially pleased that Valentina (and maybe some of her previous guests) provided basic toiletries (shampoo, soap, tp) and kitchen supplies (salt, pepper, sugar, olive oil, etc.).
Three of us were there for 5 days and loved it.