The apartment is very nice, indeed: Good location, a terrace, coziness, air conditioning and many more.
The house owner is very nice and gentle. He welcomed us personally despite that our flight was delayed by some 7 hours and we checked in around 01.00am. He gave us a printed map where he marked some good places to eat and to visit in Rome.
He also supported us during our stay at this apartment and advised a few things about the city.
I very recommend this option and looking forward for the next visit.