See for instance this: Poky Barbers’ Studio (Moravská Třebová, Předměstí) • Firmy.cz …either you can develop widget or ad an option to mix it with Google reviews. … This site firmy.cz from seznam.cz is very popular here in Czechia.
Hi there, @Vlastimil_Pokorny 
Thanks for sharing your idea with us! If more users support this request, we might consider it in the future 
In the meantime, you can manually add reviews from Firmy.cz using our All-in-One Reviews app:
