We were greeted on time (after we changed our minds several times - thanks) at the apartment near the Campo di Fiori market. The location is excellent for walking to all the main sites - basically half way between the Vatican and the Colosseum. Apartment was very clean. Wifi came but mostly went. Apartment was clean. Beds comfortable. The bathroom was spacious.
Two surprises: the 'bedrooms' were attached (no door or full wall, in between) and you have to pay a city tax.
Would stay there again.