Regina's apartment is just as described and pictured: very comfortable, big and light; it's pretty near to the city center (if you don't want to have a walk, just take the underground or the bus, that can both be reached very easily).
The noise isn't that boring, anyway you can manage it with the earplugs that Regina leaves on the bedside tables :)
She's very kind and helpful, plus she always answered to my questions very quickly.
There's a bakery and a supermarket just on the other side of the street, and some pubs and restaurants in the nearby if you don't want to cook (the kitchen is also well furnished).
Anyway, you can just take a bottle of wine and enjoy it in the big living room after a day spent around Monaco :)
The stay was amazing, highly recommended!