Overseas Holiday Home Insurance?

Are there any companies in the country where the property is located?
I don't think a UK insurance company would insure a property overseas.

A quick Google revealed a few ads of companies offering cover but I can't comment on their offerings.

There are lots of brokers offering this - some do only UK second homes, some do both UK and overseas.
I recommend you try A-plan which trades as
https://www.insuranceforholidayhomes.co.uk/
Also Saga do it if you are over 50 - not surprisingly as older people tend to buy this sort of thing.

Take careful note of the occupancy requirements - how often you are required to be there.
Keep records of each time you are there and make sure you buy at least something with a debit/credit card while there as this acts as "proof" of your visit should the issue be raised in the event of a claim.
Also depending on where the property is, note the "wintererisation" requirements to prevent pipes freezing and bursting. Usually something like the heating must be kept on controlled by a thermostat to maintain the place at X degrees C with the loft hatch left open.
Finally as with any insurance it will be different price if it is only used by you/your family compared to if it is on occasions rented out.

Edit: some may also require certain electric items normally left running 24/7 to be switched off when the place is not occupied - typically fridges/freezers.