I'm open to properties were cap rate is around 10%+ and Return on Cash is 10%-20%. 

The open floor plan and natural lighting make the space seam bright and airy while the community features like the tennis courts Pool and guard service will make you feel at home.

I've used the search feature on this forum but didn't have much luck.Are there any US investors, hard money lenders, or groups that invest in flips outside of the United States, specifically in Europe (Netherlands, Spain, etc.)?

Cap rates:  Cap rates have been expanding, but sellers think they will tighten. 

@Austin Green if it looks optimistic, take a look at the amenities/features other Airbnbs offer in the area.

This included modernizing the kitchen with high-end appliances, upgrading bathrooms with spa-like features, and adding hardwood floors for a luxury feel Lessons learned?

I am curious to learn from others as well  :) I looked at GHL for my CRM but felt like it was full of features I'd probably never use and the cost was considerably more than what I ended up using: Monday.com.

This included modernizing the kitchen with high-end appliances, upgrading bathrooms with spa-like features, and adding hardwood floors for a luxury feel Lessons learned?

I'm done buying inflated NNN rents at 6-7% caps. 

I recommend you do an online demo to see the features that it offers.