Hi
There are all sorts of regulations surrounding HMO's..........I have one.
The key thing is to try and have positive relations with the students.
Students are bright individuals. Although you should have both a deposit and a guarantor in place, students see you as getting rich whilst they are building up debt.
They have no long term interest in staying there, typically a year or two at best. They are young so parties are an attraction.
I have had 2 newel posts taken out in the communal areas. Their own bedrooms are much less of a problem as they are not able to deny responsibility.
Older students are far less trouble. I recommend final year and post grads. These students really want to do well and do not have time to mess about.
Prepare yourself to have more hassle, more expense than a standard let...........the higher returns do not come for free!!!!!
Peter