Check to ensure they offer support and geographically-relevant location to your target audience. As someone who has been on the other side of things, I can always recommend opening a support ticket prior to purchasing services with new providers.
Simply, opening a ticket to get a basic question answered will often give you quality insight on the hosting provider. Support speed, friendliness of staff, and competency to host websites can all be determined by this simple gesture.
One of the most important things to look for when choosing a host is the support, indeed. It's good if the host offers you a few ways of getting in touch with them - for example via an email, chat, phone.... When choosing a WordPress hosting I suggest you look for a plan that that includes SSD hosting for better speed and performance of your website.
WP hosting has some basic requirements to start with.
1. SSD or SSD Cached HDD
2. Good amount of RAM
3. Dedicated IP(s)
4. Cloudflare (optional)
5. Good and Clean Wordpress theme
6. Keep plugins to bare minimum
7. Caching plugin
8. Mod Security