It can be both countable or uncountable depeding on the use! Examples: - Homestays are available on the website all year long. - Homestays in this city are usually far away from the centre. - There will be a homestay with a native family at the end of the journey.

‘Homestay’ is a new word and concept, facilitated by the internet. It isn’t universally understood and its meaning is evolving. It’s usually going to be countable, but could be uncountable as a concept. For example Should we be worried that homestay is going to impact our hotel revenues? Some predict that homestay will revolutionize tourism, but I’m skeptical.

Hi Jack- I am interested in doing a Chinese- English language exchange with you. Can you message me?