I am working with different investment groups and they are looking for 4-5 star hotels in destination (Miami, New York, LA, Vegas )areas but their specific request is that they are OFF market. I have found a few but I’m open to suggestions on how to find more or have a direct access to the owners/sellers.

Even though they're looking for off market, it might be worth it to have a meeting with the top 1-3 commercial brokers in each city you're looking in.  I know each commercial sale has its own quirks and many brokers have a list of clients that they aren't able to market locally, or at all, so they rely on face to face to get business done

@Angel Pedroza I can tell you from experience that is a tough tough avenue to go down. First in foremost, 4-5 star hotel properties in those areas are going to be flagship properties and most of the time have multiple owners including any sort of connection to the brands (if any) they represent. These properties very rarely end up on the private market, and what success I have had as actually been in secondary markets (Boston, San Francisco, D.C, Seattle, San Diego, and even Atlanta) here it is more of a case of just submitting offers and talking to various brokers- if you want to connect we can discuss this further and in more detail. 

@Matthew Perry thank you for your answer and I would definitely like to connect and here more of what you have to say.

@Angel Pedroza the good news is that everything you're looking for is going to essentially be off-market. By the way, that's also the bad news. Figure out who the big management groups in your market are. Note that this obviously *isn't* the same as the flag ("Holiday Inn," "Marriott" etc.) nor is it necessarily the owner of the property. Generally these management companies can put you in touch with property owners they know to be "shopping" assets. These businesses also interface between owners looking to develop new properties and VC or other private capital. Its a tougher egg to crack. I'm unfamiliar with the markets you've mentioned, but have experience with hotels here in the northeast.

You can read REIT filings and see who owns your property type that isn't in line with their core anymore--geography and asset type. Write them letters, I have clients that acquire 3-6 hotel assets at a time from REITs this way.