Accommodation in Tenerife

I'm in the UK looking to move to South Tenerife at least for 3 months

Do yiu have any advice as to how and where to find a flat to rent

I checked the Idealista website which seems good but one flat owner there requested me to organise payment via Rentali who are an estate agent associated with Idealista

However a Google search shows that Rentalia reviews are poor with many people being messed around and loosing money without refund

Do you know of a safe reliable means of how I can organise a flat rental for myself in preparation for going there on July 1st?

Or any other advice?

I'm thinking perhaps to just book a cheap hotel room for the first week and ise that time to go see and organise flat rent directly

Many thanks