What (if any) countries are either open to or have set definitive plans to allow international tourism?

Around mid-March 2020, most countries entered some form of lock down in an effort to contain outbreaks of the novel coronavirus (nCov-19). As part of these lock downs, most forms of tourism were disallowed due through a variety of mechanisms such as visitor bans on non-citizens/non-residents, quarantines for incoming international travelers and hotel shutdowns. Since the beginning of May 2020, these lock down measures have been successful in reducing active COVID-19 caseloads in some places resulting in plans to lift previous COVID-19 restrictions.

The question is: Which countries have allowed or set concrete plans to allow inbound international tourism? In order to qualify, all the following criteria must be met:

1. Individuals who are not citizens or residents of that country may be granted entry for tourism purposes.
2. Individuals who arrive from abroad are not required to spend a full 14 days in quarantine once arriving because one of the following applies:
   • no inbound quarantine obligation exists
   • certain international locations are exempt from quarantine obligations
   • tourists are exempt from quarantine measures
   • quarantine obligations can be removed upon testing negative for COVID-19
   • etc
3. Basic touristic services such as hotels or other overnight accommodation services are permitted to operate. (Although many popular tourist attractions may be closed due to crowd/hygine restrictions.)
4. There exist reasonable mechanisms that allow international travelers to come to the country.
5. There are no other obvious hindrances which block pragmatic international tourism.