I have always hosted people wherever I've lived, whatever my circumstance. The trick is making it very easy and have a theme. Stuff I've done:
- Cage Rage (attempted to watch every nicholas cage film ever - lasted six years). Tell people to bring booze & food.
- CharcWHOterie (watching all of Dr Who, both modern and old series - lasted 5 years so far). I make charcuterie. Ask people to bring bread/booze.
- Sunday pies (myself and a friend trying to perfect the english sausage roll - been doing it a year, people bring chips and dip and hang out while we make them).
- Family movie night (watching all of Fast & the Furious with pizza).

You can just do things! You do not need to make a big thing of it (though that is nice). In my experience, you always get good attendance if you make it super easy for people to come and have a dumb but fun theme.