Hey @Adam Faber I am in the process of training a VA in the Philippines as @John Underwood mentioned. I still haven't figured out how to make it affordable, as they charge $8/hour. Even just for coverage on the weekends for 24 hours/day thats $384 per weekend or about $1500/mo. I think the solution depends on the scale of the STR business. At some point a percentage model will be more expensive than paying hourly rates. I'm going to try and leverage the fact that they are billing other clients at the same time as me to get their rates down.
Evolve is a property management company, not a virtual assistant, so I don't think its comparing apples to apples.
Guesty is a property management software company that offers a "front desk" type service for 5% of gross revenue, which includes their software. I've heard its a great service and I think is great for people who own their rentals, but not for management companies.
I think @Jenessa NeSmith also has a great point. Users specifically on Airbnb are looking for a more personal experience and generally want to speak with their "host" i.e. not an admin person thousands of miles away. I think you can get it pretty close by thoroughly training your VAs, but the fact of the matter is at some point if you plan on scaling you're not going to be answer every call or message personally.