You are best getting an agent to do tenant find only and managing yourself, it, appoint local people.
I live in Spain and manage mine myself, my local chap can do the easy stuff – he does inspections at 60 quid a time, best thing is that whilst there he can do proper checks of hidden leaks (like removing bath panel) and do odd jobs.
So 2 x 6 monthly inspections = 120 gbp, plus my tenant intro fee at 6% plus vat, plus say 1000gbp of improvements, my costs are at worst 10%.
Tenants tend to stay on avg 3 years, so the real numbers are better.
Read up on land Lord zone.com, some really good tips on there.