Excellent stay at the Cest la Vie Rooms.
Located about a 10 minute walk from the Vatican and Metro stop Ottaviano on Line A, so a good location.
The actual rooms are on the first floor in what appears to be a small old office block, so you have to buzz the door on arrival to be let in (you get your own key on checkin so can come & go), we arrived on an early flight, so we emailed in advance so our room was ready on arrival, so I would advise familiarising yourself with the area on google street maps etc to avoid confusion, there is no big sign saying 'Cest la Vie' like you would have on a normal hotel.
The rooms are a home from home, it very much feels like you are staying in a private apartment. We stayed in the Colloseo room, which is for couples, a very good size for a city centre hotel, nicely decorated and very clean, comfortable double bed, air con and good wardrobe/cupboard space for a city break. The bathrooms were very nice, no bath but an excellent shower with hair dyer.
There is a shared kitchen area with plenty of facilities and juices/breads/ham/cheese etc for a self service breakfast, which is excellent, so you can have as much as you like and save yourself the cost of a breakfast in a café etc, we were having breakfast then going to the sites all day and eating later in the afternoon.
The breakfast table area is good, but is at the main hall to the bedroom doors, everyone was very quiet when we stayed, but if you had noisy neighbours coming in late worse for wear or making allot of noise getting up early, I can imagine that could be a problem.
Out hosts arranged a taxi return to the airport after we emailed them, which was a big help as traversing the walk to the metro, the metro trip, then a coach from Termini station to the airport with luggage would have been a pain for our early return flight, we got a really nice executive Mercedes taxi pre-arranged for $40, so worth considering and booking through them for an agreed price, so you do not have a 'tourist trip' taxi to the airport for twice the cost!!!
Great value stay, When next in Rome we will stay at Cest la Vie again !