ButterflyMX is absolutely an industry leader in visitor management systems, however there are cheaper, safer options with cloud capabilities to grant access to deliveries or any visitor from any remote location.

This type of property is more suitable with someone with experience in handling these massive renovation.

I don't know your area *super* well but my impression is that there aren't major tourist destinations that will attract a huge stream of visitors.

A radiant system is also suitable for connection to solar thermal hot water, so you could effectively heat the house with solar energy (not to be confused with photovoltaics), using a tank or in-line water heater as your backup heat source.The boiler itself, if it is a newer, direct vent, condensing, natural gas unit, it could be up to 95% efficient.  

Cabo visitors are typically well-to-do and go there for the glamour so are they going to want to stay in containerhomes?

Tourists getting murdered is probably one of the worst headlines a potential visitor can read.

When calling smaller banks don't be surprised if you have to call 200 banks to find a loan that is suitable for you. 

The quality of unit and level of service you provide will dictate both the quality of visitor you attract and premium you can collect. 

With 100K you could put a down payment on a 400K turnkey multifam, or a decent vacation rental in a place where you like to visit. Or

My own disinclination to try something like this is because of the UPFRONT and RECURRING nature of the fees (regardless of whether I might find/buy any suitable deals before the NEXT fee is due)!