To quite a large degree I agree with comments regarding tenants although on the whole we have been lucky but a couple of times we have not, and too often it has been disappointing even though not disastrous. I would add that new regulations are continually coming in as the authorities try to tick boxes and all sorts of "registration" type of stuff needs constant renewal with the inconvenience and cost along with it. Let dwellings now need to be noticeably more heavily "covered" by certificates, registration, installations, etc. than your home or mine. Unless the accounts are going to be skewed all of this needs to be recovered through the rent which can be difficult to set because of the unpredictability - unless one thinks of a number and doubles it. The tenant always ends up paying..........that is if they actually always pay up. It is not easy to set and charge a fair rent without falling short. Resorting to the use of a letting agent is costly (add to rent) but, if I am correct, achieves the true aim of all the regulation, etc.: Generating (basically artificial) employment at the expense of the public, in this case tenants.
From what I have heard, if using a financial advisor it is vital to ensure he/she is truly independent and not on commission of some sort. I would not use a UK financial advisor because (again from what I have heard) they are lacking in imagination and rely purely on UK products and the Pound.