What do you like best?
I moved to One.com from another vendor since I fell in love with their customer and technical support while consulting for a web design job.
Their multilingual and 24/7 competent customer and technical support is great and their service availability and pricing are great for most basic needs.
What do you dislike?
They nag a little too much with low value gallery and website builder apps and there is no way to opt out.
Also Cloudflare is not configurable on low price packages because of their DNS policy.
Recommendations to others considering the product
Try to ask to people you that you know are using one.com for their referral code as it is a win-win solution for both.
Also be careful in assessing your goals when choosing a package as it gets very cheap if only what is really necessary is asked for.
What business problems are you solving with the product? What benefits have you realized?
I created my blog with it and use it for prototyping and testing when working within my web design consultancy.