Make you customers feel like VIPs.
Instead of a common waiting room for all patients waiting, lead each one into a private waiting room. You can have a TV there, serve them coffee, water, etc., have new magazines, and also show them a constant update on what is the foreseeable waiting time.
Many self-employed people would like to work elsewhere than home.
Specialize in creating offices where a one person business (a writer, programmer, marketer) can rent (only) a small room for themselves to work in. They should be inexpensive, modern and simple.
You are returning to the same hotel because last time was great. You may want the same room you had or the exact opposite, and you might want something different.
The hotel should track your history and when trying to book again, actively offer you both options.