Valentina's place is located in a very good area. Vatican is in 10 min walking distance. Also, you could easily walk through the city to reach a lot of other places in less than 30 min walk. In case, you don't like to walk, the metro station is very close by (less than 5 min). Also, she is very fast in responsing any questions you might have. All and all the place was clean and tidy and good for short stays.