You need to find suitable people to do any work that needs doing to the property. This means spending time in the area of the property to source various tradespeople, meet with them, see if you think they will be reliable and competent and not screw you over.
This aspect of being a landlord is one that is not talked about much. Letting agents have established relationship with tradespeople, but their professionalism and competence varies. And when you are remote and the letting agent knows this, you run the risk of being screwed over by them.
I worked in property management and saw first hand how this happens.
This is why you have to source and vet tradespeople yourself. You need the following excellent people;
Plumbers (3-4 different ones), plus 1-2 emergency ones
Gas engineers (2-3)
Electrician (3-4 different ones)
An appliances repair and supply company
Locksmith (3-4 different ones, plus 1-2 24-hour ones)
Decorators and plasterers (3-4 different ones)
Roofer (3-4 different ones)
For all other areas, you can find someone at the time you need them, like carpet suppliers and fitters, cleaning and carpet cleaning people.
You may find a guy who can do multiple trades and do them well. This is not common and good ones are worth everything.
I manage my home from the other side of the world since 2010. I already had a list of tradespeople before leaving the UK, but one day, it was a Sunday, I had a leak at my property and all the tradespeople I had were not available. I then found someone online who answered the phone and then came immediately and fixed the leak. I have used this person ever since, for everything.
I also have someone who does all my viewings. I have not used a letting or management agent in over 15 years.
I manage everything else myself.
I would say I have been lucky to find a decent multi-trades competent professional, whose work never needs to be re-done or fails. He does not overcharge and is prompt and reliable.
You need to find people to do all that might need doing at your home while you are there and before going back to your area. You really can’t do this remotely. You need to meet who is going to be working in your home and see how they behave in front of you and see how you feel about them.
Also, find a local agent who is willing to hold your property keys for you (if they are happy to do this they will charge you a small admin fee). Maybe find an agent who can function as a viewing agent only, for a fixed fee.
Like all other business areas, property relies on relationships and you need to find people with whom you can have good relationships with, especially since you are remote.
If you cannot or do not find reliable decent people to do work for you and when you need them, you are going to have a terrible time doing it alone from far away.