Here is a mini-guide for those who have no idea how to unlock the Free H stuff.
It's easier if you create a male or female character with Being good at persuasion Feature.
To unlock H-scenes for a location, you need to view at least one H-scene in each location. Easiest way is to click on a female and find the Masturbate option in the Unique menu. If a female character is at their home alone, they can also masturbate by Migrating to either the toilet room or the bathroom and Masturbating on the toilet, shower, or bathtub.
To unlock additional locations, you must first have a character Migrate to Talk to another female character, then in the Community menu Become Friends. There you can click on the Chat buttons to raise your relationship level to Friendship, with Being Good at Persuation feat helping to get a success.
Afterwords, quit back to the world map and pass the time cycle to next day/night. You should see yellow location icons indicating the unlocked female residences. If they don't appear you may have to upgrade the relationship level to either SexFriend using the poorly MTL'd "Suffle" button or Invite to Date anywhere and then Confess to upgrade to Lover relationship. Each type of female character (Office, School, Casino, Clinic, and Idol "Live House") unlocks a home location each.
To unlock the Love Hotel location, I believe you need to characters to be at a Sex Friend or Lover level and then you have the Invite to Hotel option available. Then see an H-scene to unlock the location as usual. Along with the Love Hotel, two characters having sex are also the only way to unlock the date locations (Cafe, Restaurant, and Park) in Free H mode as Masturbation option is not available in these locations.