Luxury implies expensive. I've run tests on over 2m ad spend in ads and on landing pages with Google Optimize. That word does not convert. Your pictures and UI/UX tell the whole story!

Hi, 
I write content for apartment websites. I agree with the idea that the term luxury has been used so often in the industry that it's become cliche. Some alternatives I use throughout the copy to denote the idea of luxury living include:  chic, classy, contemporary, distinguished, elegant, exceptional, expert, exquisite, fine, flawless, immaculate, polished, pristine, smart, sophisticated, stylish, tasteful, upscale

PS: Just be sure the apartments really are luxury apartments, otherwise the use of luxurious words comes off as pretentious. 

"Affluent" speaks "luxury" to me... it captures the idea that I've reached a certain level of success in life and my dwelling place is a testament to that. "Upscale" gets me to the same place and probably fits better when applied to the property.

sumptuous

Simply replace 'Luxury' with any one (or combination) of the following:
Exclusive, High-classed, Plush, Lavish, Extravagant, or Deluxe

Mike,

In student housing we tend to replace the word "Luxury" with "Modern." The term Luxury has been so overused and does not come off authentic because everyone claims to have Luxury features and amenities. This also assists us with customers who hear the term "Luxury" and think that our community is out of their price range. There is also a trend in student to replace Luxury with other things like highlighting the fact that they offer tech-savvy features such as "Smart Apartments."