When it comes to subletting condos in Denver, Colorado, the state's landlord and tenant laws don't impose any restrictions. This means that you can decide whether or not to allow subleasing. By default, a Colorado lease doesn't prohibit subleasing, so you'll need to include a clause about that. However, it's important to note that subleasing may be prohibited by the landlord or by local regulations.
To make sure that this is allowed, it's best to check the terms of your lease. If you rent in an apartment or condominium building, it's also important to ensure that the building's Homeowners Association approves these arrangements. In addition to obtaining approval from the landlord, you should also make sure that the owner or property manager is aware of the situation. They may want to visit the property from time to time to check its condition, but they cannot simply come whenever they want (the exception is if there is an emergency).
They must give you reasonable notice or obtain your permission, and it must be at a reasonable time. To make sure that you're following all of the rules, consult your lease agreement regarding this notice and the landlord's right to enter the property. Once you rent the property to the landlord, it will be your home for the term of the lease and you will have the right to privacy. In an STR Sandwich condo, you sign a long-term lease (ideally for more than 24 months) and then lease the property for the short term.