Overall, great opportunity for a short brake with the family.
Very close to Colosseum and all other sightseeings are within walking distance as well. BTW, metro station is also nearby, so you can easily get here by rail.
Should mention, that there is very cozy cafe downstairs, offering all possible coffee options and delicious pastries and sandwiches.
Marianna is a great and communicative host, who solved some issues immediately.
@Marianna: Thanks for everything!