You'll need to work hard. Let's draw an outline.
Location:
1. What is the noise level like? Is it quiet enough for people to read in peace but still in a pretty social area?
2. What is the ambience like? Does it make people want to check it out? Does it look trendy but casual?
3. Are people in the area aware of anime and/or Japanese culture? For this, a high school or university would be best.
4. Is it a wide, open space where people can relax, sit down, and stretch?
5. Is it within walking distance for customers? Is there a parking lot?
Services and Things to Think About:
1. Is it wheelchair accessible?
2. Is there Internet or free Wi-Fi?
3. Do you serve cheap, delicious food and/or drinks quickly? Are there vending machines?
4. Are the hours reasonable?
5. Is there some kind of seating or furniture (rugs, cushions, chairs, tables, etc.)?
6. Is there good lighting?
7. Is there good advertising? Even if it's in a good location, you need some way for people to find out about it.
8. Are they charged per hour? What's the price? What's your business plan to increase revenue?
9. Is there a rental program? Is there a membership program? Can you buy the inventory?
10. Are there anime events, lotteries, and prize contests?
11. Is there a computer area or a an area with just multiple outlets/terminals for people bringing in their own laptops?
12. Are the bathrooms large (multiple people can go in at once)?
13. Are your employees capable and kind? Do they attract new customers?
14. Are the bookshelves organized alphabetically? By genre?
15. How will you keep it clean?
Inventory:
1. Are there manga in BOTH Japanese and English?
2. Do you have both old and current series?
3. Do you have multiples in stock?
4. Are they digital or traditional printed books?
5. Will you also stock DVDs?
You can find a lot of information online. There were articles about manga cafes in California as well and what happened to them. I'm always for creating this sort of business, but you have to be careful. It'll either end up badly or you won't make much money off of it due to little influence.