Hi desm0nd, and welcome to the Mattress Underground 
Any mattress though decide on for yourself will be based on your Stats (height, BMI, sleeping position(s) and any underlying health concerns) and your PPP (posture & alignment, Pressure relief, and Personal preferences). You can compare the Mattress Specifications You Need To Know to the Mattress Durability Guidelines to see how certain materials will last over time…latex is one of the most durable materials you can have in a mattress; if you like the feel and can find a good match for your support and comfort needs, a latex mattress can last many years.
I’m not familiar with the NSC Natural Elements latex mattress, bout I took a look; an 11" mattress with organic cotton & Joma wool cover, with a 4" latex comfort layer and a 6" firm, zoned latex support. As you noted, the mattress is GOLS, ECO institute and OEKO-TEX Certified, and made in Canada. There are no ‘red flags’, this is a solid durable mattress, but there’s no way to assess is suitability for your sleep profile without your knowing your Stats.
Not sure where you are located, but many of the Trusted Members of the site offer natural and organic latex mattresses in the U.S. as well as Canada, which you may be interested in. If you want to provide your Stats and what you are looking for in a mattress we can possibly comment further.
~ Basilio