The flavor of guava fruit is tropical indeed. It's sweet with a flowery essence and comes across like something between a pear, a mango and a strawberry.
If you eat a guava that hasn't reached full maturity, it will have a sharp tang to it. Fully ripened guavas may be a tiny bit acidic, but they shouldn't be sour.
You can definitely eat the seeds. It's up to you whether you want to or not. There's nothing wrong with scooping them out and tossing them, but many people enjoy them.
The biggest impediment to eating the seeds is the hard texture. Some seeds are harder than others, so you may need to assess your desire to eat them on a case-by-case basis.
Can You Eat Guava Raw?
You sure can. You can eat it like an apple with the skin on, the major difference being that you need to spit out the seeds of the apple. Some people prefer fresh guava with a little flavor-enhancing salt.
You may have heard of guava juice. You can run fresh guava through a juicer and make a sweet, refreshing fruit juice with all the essence of the guava. If you don't have a juicer, you can use a blender and then strain the pulp through a sieve.
See Also: Best Juicer Blender Combo Options
How Do You Know When a Guava Is Ripe and Ready to Be Eaten?
Luckily for us, there are telltale signs in the skin of the fruit when it's ripe. Young guava fruits start out a vivid green and mellow into a yellowish color when they're ready to be eaten, perhaps with a light pink tinge.
The scent of the fruit also develops as it ripens, becoming deeper and sweeter. If you're trying to accelerate the ripening process, place it in a paper bag with an apple or a banana.