We really enjoyed the location, helpful hostesses, and comfortable set-up of this apartment. Claudia and Cristina were incredibly friendly and helpful, very prompt in all communication, arranged a very nice driver to pick us up from the airport and drop us off (for a reasonable price and including a car seat for our baby), and did a fantastic check in complete with great advice and a nice bottle of wine and snacks. We traveled with our 1 year old son, and they had already set up the crib and had a high chair attachment ready, along with toys and even a few diapers and baby food (just in case!). There is also an elevator available to get to the 5th floor - and it was easy to take our large pram up and inside the apartment.
The location for us was perfect - within walking distance of all the sights (but we enjoy walking) - however, there is also easy bus transportation close by. It is located in a quiet, seemingly non-touristy area (despite being just a few minutes' walk away from St Peter's square). In fact, from our balcony, we saw the new year's eve fireworks over St Peter's Basilica - a magical sight!