We spend a week in Mattias appartment and we really enjoyed our stay. The location in Trastevere is perfect to explore the city and to enjoy great places to eat and go out for drinks close by. The appartment itself has a lot of character and is very cosy and well equipped. The highlight is the rooftop terrace with an amazing view!
What you should consider if you are a very tall person or have a very light sleep: the appartment has a lot of low ceilings so you have to be careful with your head, and a lot of stairs - but in our opinion the view is totally worth it. The perfect location in lively Trastevere also means there is music and people on the street chatting late at night.