First of all Andrea the hot is a monument of Rome that you don't want to misse to see, If you don't see Colosseo coz 38C in the sun nothing wrong with it, if you missed Andrea there got to be something wrong with your journey :)
Very neat place, very sober & clean always, he looks after you really kindly & has always a good advice to give
Locationwise ideal everything is centered, Vatican 200 m, Bus 64 in fronton the door; I will come back