I know I have a lot more to learn and understand, but I am a quick study and know I will excel.  

Study real estate investing, attend auctions, get your real estate license, go to REIA's. 

I have been considering switching up my portfolio to long term commercial leases, or renting shop space (commercial leases.With so many options out there I was wondering what some of your best headache free real estate investments have been: some examples could be storage units, multifamily rentals, commercial buildings with long term leases, etc.The lowest maintainence ones have the lowest cap rates.

I like your repair with accent tile but I also like your idea of a small shelf.Those colorful bathrooms are a dilemma, especially when they are well built/maintained and are in good shape!

Start to understand what the cost of materials are...that might mean you have to go to home depot and study what things cost! 

I am new to the the real estate investment world and looking to expand my knowledge in flipping houses and maintaining rental properties.

If your goal is to own the property but have essentially no day-to-day involvement in the business of the vacation rental -- you don't talk to potential guests, you don't maintain the calendar, you don't coordinate housekeeping -- hire a real legal licensed vacation rental manager.  

I continue to research, study and educate myself in being successful as an investor.

In addition you are maintaining y software issues and hardware issues.Free Laundry - You have to maintain the machine whilst not making money.In my opinion, since you only have 4 units onsite, it would not make sense to have a card operated laundry system.

If you do a lease purchase, you might make $200 per month for 8 years and $700 for 2 years if the buyer pays it all.My experience is these types of lease purchasers don't maintain the property and if anything changes, they bail.