Regarding your first question, you should be able to use the same photos for both listings as long as you have the legal rights to use those photos. Most online listing platforms allow you to access your previously uploaded photos and select which ones you want to include in your new listing. You can also consider using a photo management tool to help you organize your photos and quickly access them for different listings.
As for your second question, if you want to give guests the option to use the full kitchen, dining area, and outdoor space, you may want to consider listing the space as a "Private Room with Shared Spaces" or "Private Suite with Shared Spaces".
This can help guests understand that they have their own private area with a separate entrance, but that there are shared spaces available for their use as well.
When creating your listing, be sure to clearly describe the space and what is included. You can mention that the listing includes a private bedroom, bathroom, and "hotel-style" amenities, as well as access to shared spaces such as the kitchen, dining area, and outdoor space.
Be specific about what guests can expect in terms of privacy and shared use of the space, and include photos that showcase the separate entrance and any other unique features of the listing.
Finally, consider using a title for your listing that accurately reflects the space and its amenities.
For example, "Private Suite with Shared Kitchen and Outdoor Space" or "Spacious Private Room with Access to Shared Areas". By being transparent about what guests can expect during their stay, you can help ensure a positive experience for everyone involved.