I do not live in Rome, I can offer you advise only about what to see there. The most obvious things would be the Vatican (church and museums), the imperial ruins, piazza Navona, piazza di Spagna, Trevi Fountain, Villa Borghese, Pantheon, the "Campidoglio", and many other things, from this point of view Rome has no rival. As for having fun, the fashionable venues change with time, so some residents (if there are any on this website) could give you more up-to-date info. Internet can certainly help you find a good accommodation.

Thanks el1973 it is very kind of you. It is a good start

depends upon what kind of fun you are used to

~If at first you don't succeed, destroy all evidence that you tried~