What part of Paris to hotel in for a weekend in Paris?

I am surprising my wife with a weekend in Paris. Can anyone recommend the best area of Paris to look for Hotel accommodation in? Obviously only there for a few days want to make the most of the typical touristy things. I want to stay in a good area, preferably an area that is safe to walk around in at night! Advise about what areas not to stay in would be good too! Thanks alot.

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia…).