Hi Kingalen
I honestly would not use that French site as a model for your own. The homepage is just one big banner and you have to scroll below the fold to search anything,
In my experience, the best home page for this type of site is one big search box in the middle with little opportunity to refine it until they get some results. You have to hook them in with the minimum of fuss.
It's not the amount of text on the homepage but how relevant it is and quite frankly it just drones on about expiring leases and out of town businesses needing a rental. Keep it focused and succinct.Go to MOZ keyword explorer or any similar product and type in 'Office Space New York' and look down the most searched keywords. 'New York Office Lease' as well and write clean contextually strong copy for the home without overdoing it and trying to rank for every keyword you can think of.
Then when a user has clicked on say, Bryant Park, show them the listings. Not just one or two at the top with a link to 'view all' and the rest of the page thick with content - Give them what they want as quickly as you can, and if then add some local area content with a map and image with alt saying 'Bryant Park' below the listings.
It seems to me that someone's attempts at novice SEO has ruined your site and you need to simplify and make the object satisfying your customers as quickly as possible rather than filling the site with cannibalising content and needless words.
Of course, Meta is important for SEO so make sure that yours are optimised 'Bryant Park Office Space for Lease' you have 70 characters so. use them.
Use one (1) H1 on the page! - for some reason your logo is an H1 - Use a logo with an Alt tag - 'Metro Manhattan Logo'
Then the other H1 'Bryant Park Office Space' is OK, grab a photo of Bryant Park and Alt it 'Bryant Park Office Space' and use just 3-500 words per page and you will be fine.
I hope that helps.
Regards Nigel
Regards
Nigel