This is our first time in France and we'll be staying a couple of day in Nimes. Can you recommend hotels or B & B?
I would just look on tripadvisor.. they list reviews by score. Read lots.. and cross check by checking the reviews on booking.com and expedia( those reviews can not be falsely submitted as you must have booked and completed a stay to be allowed to post a review on those sites).
It is nice to get a recommendation on a forum, but its not like you will get 50 people piping up about a hotel in Nimes.. its not a major tourist city ( compared to places like Rome or Barcelona etc)
I have booked at least 75 different places all through out Europe this way.. it takes a bit of reading and cross checking, but I have never arrived at a hotel and been surprised .
In 2015 we stayed at the Hotel des Tuileries, which was recommended in Rick Steves book. It was an easy walk for us to the train station, and through town to the arena. It even had air conditioning (although it was so hot when we were there it didn't make much difference.
I also was happy with a stay at the Hotel des Tuileries and used their small parking garage. If driving, then follow the tourist office's hotel direction signs carefully. There are a lot of one-way streets in irregular shapes, so it's hard to "go around the block." It's actually one block different than the map in our 2015 Provence & Riviera book but correct on Google Maps.
www.hoteldelamphitheatre.com was being remodeled at the time I was there, and despite that seems not to have raised prices!
My wife and I were in Nimes for two nights in 2014 and stayed at the airbnb linked below.
It was clean and conveniently located within a short walk to the arena and restaurants. There was even access to a reserved spot in a parking garage, though only for a very small car.
FYI, you don't say when you are traveling, but the Tour of Spain pro cycling race starts in Nimes this year on Saturday, August 19.
The owners of the Tuileries hotel dabble in microbrewing beer, so if you like that kind of thing you will make friends with them quickly.
Follow the RS guidebook walking tour for sure, but also follow the one that is on the back of the official TI map for additional interesting stops. And if you know anything about bluejeans, you can compare and contrast their legends about denim with the San Francisco legends about denim. And find out when the water fountain show is at the park for a nice family outing. There are adult options, too.
We had a lovely stay in Hotel de l' Amphithéâtre. Wonderful room with an iron balcony overlooking the square.