We loved this spot. It is on the top (5th) floor of a beautiful building. The stairs can be tiring but there is a very small elevator which works well.
We had plenty of room for our family of 5 to stretch out in our bedrooms. The living room is also a bedroom.
The Colosseum is about a 7 minute walk from the apartment in a lovely neighborhood which is not too touristy.
I would definitely go back!