Things you want to take into consideration when renting a room.
Costs. - Rent, electricity, water.
Music license - does the building you rent from have a music license (you may want to play some relaxing music)
How long rent contract is?
Can you advertise within the building?
There is loads to think about. It's hard to pin them all down.
I'm currently renting a room and these were the main things I asked.
I also made a point to put in my 12 month contract that they couldn't review my payment (ie: they can't put my rent up) The last thing you want is to rent a room, and sign a contract agreeing they can review it in a for months time and increase rent.
Good luck. X