After ten years of very good tenants without a single void day (despite changes along the way) we re-let our 2 bed flat a year ago, via Open Rent.
They did the referencing, registering the deposit (a legal must) etc., and arranged a photographer for the listing photos.
We had so many enquiries within 2 days, and re let it straight away.
We had originally let it via a High St agent, which was Ok at first, but later there were maddeningly incompetent staff, so we ditched them and did all the ‘needful’ ourselves - deposits, arranging gas and electricity checks, arranging any maintenance or repairs, etc.
This time we met the viewers ourselves, thinking we’d have an instinctive ‘feel’ for who was best. Just ended up feeling sorry for the ones we turned down, though!
I would just add, we’ve generally been pretty lucky, but 2 years ago we had a major leak in the bathroom, that involved a huge amount of work so was very expensive, especially since we couldn’t shop around for a good deal with tradesmen - it needed doing asap for the tenants, since they had to shower elsewhere for a few days.
So I’m sure you don’t need telling, but funds for any such emergencies do need to be readily available.