Earlier quoted context omitted.
The easy answer is go to a bike shop and do a test ride. I guess it will depend more on your build - how much height is in your legs vs body for example.
I guess Al-Khwarizmi comes from the near East and from 9th century or thereabouts, so there are no local stores for them to try out, but online shopping works perfect since they deliver to all places and to all times. Being similarly tall with longish legs (especially my thigh bone, important for eg. legroom in cars, airplanes...), I'd be extremely weary of jumping on a bike that's not suitably sized, no matter what…
Looking at comments, they come from western Spain, there's plenty of Bike shops in say Cáceres.
If I was spending €1000+ on a bike I was going to use for the next decade, I'd want to try it out first