I would definitely go to Paris, if only for a few days!
I would do a Seine river cruise - just at sunset is perfect. This will give you a good tour of the city from the river and a beautiful view of the Eiffel Tower. Speaking of the Tower - I would also go to that at sunset or the evening, when it's lit up. Bring a baguette and a bottle of wine and just sit on the lawn and enjoy it. If you approach the Eiffel Tower from Trocadero you will be able to take the best photos.
The hotel we stayed at was very expensive, in the St. Germain district. Not sure I'd recommend it if you're looking for cheap, but it was a wonderful area to stay in.
Personally, I don't think I'd do the Louvre on a short trip. It's huge and the Mona Lisa honestly isn't that awe-inspiring. The museum needs hours of time to explore, and on a short trip I would prioritize the Eiffel Tower, Notre Dame, and just strolling the city and enjoying its beauty and its food.
If I knew where you are in Germany then there are other places which just might be good to see .
I have some hotel chain .... lists that are really good hotels all over Europe .
We fly from Ireland to Amsterdam ( Relations ) , Dusseldorf ( Relations ) & Munich ..... for Austria & beyond
The ABD used to stay at the Hilton Arc de Triomphe. It's no longer owned by Hilton; it's now called The Hotel du Collectionneur Arc de Triomphe. Doesn't look like much from the outside (very '70s) but the inside is lovely - beautiful Art Deco decorations and furnishings! It's well located within easy walking distance of the Champs-Élysées and the Arc de Triomphe, near to metro stations and not terribly far from the Eiffel Tower. It still gets good reviews on Trip Advisor. However, I think the prices have gone up since the conversion, and it will run you $300 - $350/night.
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We were in Paris in early October last year and did a dinner cruise along the Seine. It was really beautiful and the food was very good. Highly recommended.I would definitely go to Paris, if only for a few days!
I would do a Seine river cruise - just at sunset is perfect.
A 2-day trip to Paris is way better than a no-day trip to Paris. Plus the OP said she'd be arriving Friday (flying out on Thursday) which gives her a day to recover until her husband is able to tour on Saturday & Sunday.A 2-day trip to Paris from the USA is possible, but certainly would not be enjoyable! Your body will need to overcome 6-hours of jetlag which is not a fun process, especially if you have never experience trans-Atlantic jetlag. I suggest that at a minimum you need to stay 4-6 days in Europe.