1)It slows down in Oct. but this is a year round city and lots of people come in for work. If you set it up so its comfortable for that you will get repeat guests.
2)Yes- Airbnb collects and remitts yr taxes. NOT your income taxes. Thats on you.
3) If you are earning money you are paying taxes. No such thing as free $10K. You are a" landlord" and have income.
4)Yes- all reletaed items to the running of your Airbnb are have tax saving implications. Save ALL reciepts. Sheets/ toilet paper/ milk/ permits
5)Airbnb has a relationship with H&R Block. You need a LEVEL 4 person to fill it all in-It should be ~$200. DON"T settle for someone with less training. There is a info video somewhere on Airbnb/H&R
Single most important piece of advice: Stay out of peoples way in the morning and do NOT interfere with the morning coffee routine.