Eat up! There's not some "safe" number, it would be hard to OD on eggs. No more than 4 a week sounds like some conventional medicine advice. The only people who try to scare you are the people who think cholesterol and fat are some evil villains. 2 a day should be no problem at all.
That being said, you might want to rotate off and not eat any once a week or several days each month, just to make sure you don't develop an allergy or intolerance. (That's good advice for many foods that are daily staples.)