The short summary: We really liked this apartment -- it was centrally located and was clean and in great condition.
This apartment is centrally located in the Monti district of Rome on a small cobblestone street. There are numerous great restaurants all within a 5 minute walk, and the Cavour metro stop is quite literally less than a 5 minute walk away. The main Rome Termini station is around a 10 minute walk.
The apartment is located on the first floor, which in Rome means one level up from the ground floor (which is floor 0). The stairs aren't too bad, though if you have a huge suitcase it's a little tight. The apartment itself looks like the posted pictures. There is a tiny kitchen area, with an under-counter refrigerator and a 2 burner cooktop, along with pots and pans and dishes. The couch can be unfolded into a sofa bed, which was actually pretty comfortable. The bed in the bedroom was comfortable as well, and the linens were clean and comfy. The bathroom is a little small by American standards, but it worked just fine and again was clean. The hot water boiler overhangs the tub a bit, so if you're tall (like 6ft) you have to stay on one side of the tub. The AC worked well in the June weather, though you have to keep the doors to the bedroom and living room open for the cold air to reach those rooms. The wifi is OK -- it worked great during the day (consistently 10-15mbps down), but in the evening (say from 9pm-midnight) it was either slow or spotty. Not perfect, but we could make do.
Overall, we were quite happy with the apartment!