Caffe Italia is the real deal. Don't expect any frills or a hip Instagram account to follow- you'll get a small table in a loud room full of old Italian fellows and a really solid espresso. Their in-house blend is quite dark which may appeal to some coffee drinkers averse to lighter third-wave blends. Their capps are basically perfect.
The decor hasn't changed much and the ambience is authentic (and not "authentic" like the shitty reclaimed wood/industrial stool/moustache shtick you'll find elsewhere.) They also make a mean sandwich if you're hungry.
Overall, a really satisfying experience with a classic ambience which really contrasts with younger shops across the city.