He has extensive experience with hotels and renovations.

They are a commodity, and owners are competing directly against hotels in this space, so rents are ultra low.

Sure it does. but depending on who the celebrity is/was.....That's why so many little hotels, boarding houses, vacation rentals, etc..... feature this in their advertising.And in some cases, you will not get more money, but you will get more guests.A little while ago, I went to Tombstone AZ and stayed in 'The first boarding house in Tombstone'....really cool place but kinda small and, well....old feeling.

I made some in depth STR marketing videos on youtube (I come from a hotel marketing background) before I joined BiggerPockets and people loved them.

Plus all of the travel costs and hotel costs at the seminars that I went to for a year.

You can do it on a SF rental, an apartment, a car wash, a golf course, a hotel, a warehouse, etc. 

I just got under contract on a hotel that I will convert to workforce housing. 

One of their so called instructors from one of the training sessions asks the students to go to the five star hotels, or go play golf, or go horse riding, or go hang out at the high end night clubs for the sake of fund raising.

Not for a single airbnb like you are seeking (you and everyone else) but because if you start a BNB or a guest house or a hotel, you can get 40% of your investment back in the form of a tax CREDIT that you can sell for about 90 cents on the dollar. 

Not a hotel.