Federico and Irina were the most helpful hosts imaginable. They gave us such a warm welcome and Federico was available anytime for assistance, information and advice. He is a font of knowledge on all things Roman - sights, shops, markets, fresh produce, restaurants etc. This is no small feat as I have been travelling to Rome frequently for the last 35 years.
One day he even accompanied me to a wine/spirits shop when I wished to purchase fine wines for our New Year's eve dinner and the shop was even better than others with which I have been acquainted from my prior trips to Rome.
The apartment is utterly luxurious. It has clearly been masterfully renovated using only the best materials and workmanship. It rivals the finest places which I have stayed in through Airbnb. Comprising of three large double bedrooms and two very high-spec bathrooms, all the furnishings and fittings are of the highest "boutique" standard. Some nice finishing touches are the restored decorative ceiling frescoes and the original artwork hung throughout the home. I would even contend that the photos posted do not do it justice.
The area in which the apartment is found is reasonably central given that it is just within the old Roman walls and the Colosseum is only just over 1 kilometre away. St John Lateran basilica is a mere 400 metres away, approximately. The area, Esquilino, is very good providing a quality bakery, a few very good restaurants as well as good butchers and fresh produce vendors.
We both look forward to being their guests again in near future.

La massima di qualità, l'apartamento di Federico e Irina è imaginabilmente lussuosimo: grande con spazio ampio per 6 persone, con tutt'i dettagli del ristruturazione di questo vecchio apartamento unicamente raffinati, veramente di 5 stelle. Federico e Irina erano sempre disponibili in qualsiasi momento di aiutarci. Federico è davvero esperto di Roma su tante cose: dove mangiare, dove prendere la vedura, carne eccetera. La zona è centrale, appena dentro i muri Romani e si arriva al colosseo in 25 minuti a piedi. San Giovanni in Laterano è pocchi centinai di metri. Una zona pulita, per bene, e con tutt'i servizi intorno.
In conclusione, uno dei più bei posti che siamo mai stati a Roma.
Grazie mille!