This is my second time in Rome and was the first time I decided to stay really central. the location was fantastic (even if I got lost a few times, part of the adventure!) and all of the main attractions of Rome are within 20 mins walk in all directions.
I did some work over the week I was there and there was no issue with WiFi. One thing to bear in mind however is that there is no phone signal in the apartment. This didn't bother me as I use wi-fi to keep in touch with folks.
Bathroom is simple and effective. Kitchen is a little basic but plenty of options to eat around if you want a big feed! Bed is large and comfortable.