Modular tabs or long page scroll

A content heavy real estate website is deciding whether to switch the navigation to using modular tabs, where content opens in the same pane. Currently, the site uses a long page scroll where all content loads at once and the navigation allows the user to jump to points of content on the page.

Are there any examples of best practices? How should a designer decide which user interface to use?

Here's a link to a sample page:

https://www.thebambergergroup.com/building/17/the-murray-hill-mews+160-east-38th-street/murray-hill/nyc

Screenshots below:

All content loads at once - Active Sales is the first section:

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User can jump to another section, such as amenities:

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