We booked Thea's for 4 days,
Good points are: Location is near the vatican and Metro station, there is a bus stop down the apartment. Value of money is fair. Cleanliness is fine. Host is available, welcoming and helpful.
Bad points: one bathroom is shared with a minimum of 4 people (for me it was too many people).
Breakfast is based on cakes and biscuits with tea or coffee (maybe that's the Italian breakfast and not Thea's).
First day and few hours from the second day we had no wifi so we used the gigabytes from the cell phone to access the business email account and get the work done.
I would recommend the place (if sharing the bathroom is no big deal for you) due to the easiness and ability to access most of the city attractions.