Santa Fe can be fairly expensive in the summer tourist season. Here's a suggestion if you don't find one in your budget. You could stay north of the city for a couple of weeks at the Army Corps Riana Lake CG at Abiquiu in Georgia O'Keefe country. $8 a night with the Federal Senior Pass. (Sites with water & electric available, dump station.)
There are great places to hike and see nearby like Chama, Taos and many small villages. Not sure about fishing and golf. You can tour O'Keefe's home and visit Ghost Ranch where she painted. The scenery is stunning. Have green chile cheeseburgers at Bode's, a gas station and village hangout.
Then you could spend two weeks in Santa Fe. My favorite there is Trailer Ranch, full service, which gives 7th night free. It's a 55+ age park and is right on the bus line. Very knowledgable staff with tips for everything going on. Bus is $1 all day for seniors and will take you to the Farmers Market or Plaza for sightseeing in a few minutes, so you avoid parking hassles. I've used the bus numerous times and found it reliable, safe, clean. Just off the Paza, the Southwestern food is wonderful at The Shed Restaurant.