Am I able to set preferences on the types of students I wish to accept e.g. non-smokers, over or under 18s, male or female only, etc.?

Yes, you can specify your preferences from your SRS Dashboard.

Yes, you can specify your preferences on your profile when you create your listing. We encourage  you to challenge some of your thoughts or assumptions when creating your listing, you never know who you might meet / form great relationships with. The more flexible you are with the students you will accept the more bookings you will receive.