I spent a great deal of time in Paris, working..touring, etc. Some suggestions
I think may be useful. If you are looking for a "reasonable" hotel which we used when company not paying was Hotel L'Aiglon. Not the International, etc but comfortable and near a Metro. Some other suggestions..The best way to get inexpensively acquainted with a new city is to take the American Express half day tour. Sit in the front with a map and mark down where you want to go back to. To prepare for the trip. Go to Barnes and Noble and buy a map
of Paris. Mark the "Tourist Sites" and check the distance between what you want to visit and you will soon see that you can't walk to each. Thus, get a map of the Underground which is very easy to use in Paris. The taxis can be quite expensive even more so in the evening and night where their rates go
up. For sweets go to Fucon's which is near the Opera. It is famous and you
will go back many times.
It is kind of sad to see some tourists standing on the corner trying to decide what to do next. If they just thought of how much that time costs when all the planning, which is great fun, could have been done before going overseas. A test someone once said to me that from planning you should be able to parachute into a city and know exactly where you were and what to do next and best way to get around. In Paris it is fun to sit in the Cafe's and watch the public. A great place to sit and enjoy the city is at Momarte (spelling?) and watch the artists and view of the city. It is easy to drive up the hill and park.
Just some idea's that may help?