Great apartment for a group! We were six people sharing - two couples and two friends. The couples had one bedroom each and the other friends could have one room each. There was also a kitchen and dinner/living room which was great! Everything was very clean. Aircon which was very nice in June. The location is very good - walking distance to the St Peter church. Busstop close by (which we didn't use) and train station just around the corner (which we used to go to Santa Marinella beach one day - just a little more than half an hour by train).
Only thing that was slightly inconvenient was the hot water to the shower which took a long time, and could suddenly disappear while showering. But everything else made up for this slight discomfort! :)