I would highly recommend this place. The apartment is about 10 minutes from the vatican walking. About 30 minute walk from city centre but is close to a metro line and also a taxi rank.
The apartment itself was very clean and well equipped. I would say ideal for a couple.
The host Allessandro was so helpful and a gentleman. His instruction for checking in are very clear and mean it is possible to check in around the clock. He is very responsive by email and WhatsApp. He had a bottle of wine left in the fridge for us on arrival along with milk, coffee, tea and some pastrys for our breakfast.
I could not recommend this place enough.