The safe recommendation for most people and small businesses. Squarespace pairs genuinely well-designed templates with an all-in-one package: hosting, a domain, email marketing, scheduling and basic online selling in one place. It is hard to make a Squarespace site look bad, which is the whole appeal for anyone who is not a designer.
You trade some flexibility for that polish, so deep customisation hits a ceiling the developer-focused tools do not, and there is no free tier beyond a trial. For a clean, professional site with little effort, it is the default.