Paris hotels very near metro

Assuming you mean USDs, you have about 168€ which should provide many options. However, there are very few hotels which are not near a métro station. If your husband has mobility issues, you should probably concentrate on using buses but hotel possibilities remain in the thousands without additional guidance.

Popular areas are along rue Jacob in the 6th arrondissement and along rue des Ecoles in the 5th. You might check hotels with addresses near these locations.

There are many, many, many hotels in Paris, in all price ranges, that are a close walk to a metro station. The bigger problem will be how your husband does on the metro itself. It is filled with stairs and long passageways within the stations, and almost no escalators or elevators.

I just got back from Paris a few days ago, and had not been in about 9 years. I had forgotten just how much walking and how many stairs there were in metro stations.

Also, with the hotels themselves, even if there is an elevator, there are often stairs to get to the elevator, and the elevator may not go to all floors (I just stayed at a hotel with both these issues). Then there's the problem that many restaurants are on ground level, but their toilets are up or down a flight of stairs (often steep - one set was so steep I took pictures!).

All this is to say, if you can specify exactly what your husband's mobility issues are, people can give better advice. You may have to forsake the metro altogether, or only use it for certain trips, and use buses and taxis for most purposes.

Rick used to have a book Easy Access Europe. It's now out of print (last edition was 2006), but he has it for free on this website. It's a good place to start, and of course you would then supplement it with further and more recent information. Here's the link: https://www.ricksteves.com/watch-read-listen/read/easy-access-europe

And here's his page of tips for travelers with disabilities, with many links to other resources: https://www.ricksteves.com/travel-tips/trip-planning/travelers-with-disabilities

Consider using Paris' fine bus system instead of the Metro. Buses are obviously at street level so unlike the Metro there will be no stairs to manage. And the Metro can require quite a lot of stairs if you have to change lines a few times. The buses are not as quick as the Metro or RER but they go everywhere, they cost about the same (I think), they give you a nice view of the city, and no stairs.

I too have mobility issues and found the buses to be a much better transit option. We downloaded the Paris bus system map onto our pads and also used Rome2rio and Google map directions to figure out the best way to get to our destinations. We stayed in an Airbnb room near Gare St. Lazare, which had many bus routes nearby, but unfortunately, the Airbnb no longer is listed.

Tools:

Rapid transit, including trip planner: https://www.ratp.fr/en

Google Maps (the link varies depending on your residence) has a hotel search function that can be seen on a map showing transit.
Type in an address and then use the Nearby function.

Hotel booking sites such as Hotels.com, booking.com and many others, often use Google or the equivalent to locate their properties.

Metro have many, many stairs. My choice would be the bus. You can get a Bus Plan - "L'Indispensable" is a good one and makes everything clear. About 6 EU.

The metro is not suitable for someone with mobility issues. We use it a lot and on almost every trip there will be long walks down long corridors and many sets of steep stairs. Just thinking about our trip back to our apartment this evening which only involved one line, no transfers (transfers always involve stairs). We had to go down a set of steep steps and then a short flight to enter the metro, after going through the entry stiles, we had to walk down a very long corridor and then go down the equivalent of about 3 floors of stairs to get to the platform. When we arrived at our destination, we had a very long steep flight of stairs -- equivalent of two floors of stairs -- to get to the exit stiles and then two flights of stairs to get to the street level. This is pretty typical. If you cannot easily walk up three or four sets of stairs don't even think about the metro. Use buses or when they don't suit call a cab. Your husband should carry a cane so he can more easily claim a seat on the bus. The age of being entitled to a seat is 75 -- not that anyone will offer you one at that age (I speak from experience) so if mobility impaired, some visible sign of that is important to claim a seat.

The age of 65 is mentioned in the Paris Bus systeme. And anybody can use a cane.

There are signs on public transport that lay out the requirements for claiming a seat if disabled. You will probably have to ask for a seat though; I rarely see people jump up even of elderly people or those obviously having difficulty.

It’s true that a metro station is never more than 500 meters away, but ( a big “but”) that is only the ENTRANCE to the metro station. Once inside you may have a very long trek to the platform for the train you want.

To clarify the bus system priority--which I remember from when I was eight-months pregnant riding the bus to work in Paris--and note there are only four seats marked for priority under this system, so it's rare anyone gets a seat using this antiquated legal system. But here it is: https://www.ratp.fr/categorie-faq/4626

A qui sont réservées les places prioritaires ?
Les places prioritaires sont réservées par rang de priorité aux personnes suivantes :
Mutilés de guerre et mutilés militaires ;
Aveugles civils ;
Invalides du travail ;
Infirmes civils avec station debout pénible ;
Femmes enceintes ;
Personnes accompagnées d’enfants de moins de 4 ans ;
Infirmes civils sans précision de la station debout pénible ;
Personnes titulaires de la carte station debout pénible ;
Personnes âgées de 75 ans et plus.

So wounded war veterans and wounded veteran have first dibs, the blind are second, future mamas are fourth while persons over 75 have 9th priority on the bottom of the list. Furthermore, I had to carry a card from RATP showing I was pregnant--which I sometimes had to flash to get a seat.

Anyway, just like in Manhattan, a lot of the people taking a bus have a physical reason they do so instead of taking the quicker underground transportation. I'm regularly offered seats on both the bus and metro, so it does happen, particularly if I don't color my hair. I do have a bit of a fragile look, though I'm not. Finally, IMHO, if you need a cane, I've seen people be very considerate. Generally, riders don't game the system to see who needs the seats most.