I went to Paris for the first time last year and loved the evening e-bike tour we did. There are lots of those types of tours available if it's your thing. My friend booked us on this one: https://www.airbnb.co.uk/experiences/1190029We booked a hotel by near the Luembourg Gardens, so nice and central. We have tickets for the Louvre on Saturday afternoon and a nice restaurant after - further we'll just see what we come across (though my wife is keen on a Simone de Beauvoir tour).