@Mark--Moshe-0:
What @Susan263 said is all true. Don't be afraid to ask questions- that's what the inquiries are for.
Be prepared, though, that long term rentals fall under different laws than short term. You need to read up on the Maryland Landlord Act and make sure you follow it to a "T" or you can get into legal hot water very quickly. Pay close attention to entering the guest's area without notice or not enough notice. Also be prepared to evict and know what is involved should that happen. Also you need to be aware of zoning laws for your neighborhood as some areas restrict long term rentals (usually Z1).
Long term rentals are great when they work out. It's a LOT less work to clean once a week or once a month than every day! We usually offer our long termers clean sheets and towels and a quick clean (vacuum, mop, dust and bathroom cleaning) once per week. This enables us to enter the area and make sure that everything is OK and makes the renters feel like they are special too.