The Contact tab contains all the contact information for a place, and allows you to easily enter and access any valuable account information you want to store as a reminder in the note field.
How to enter the comment/note for an account
1. Click on the My Place's tab and select the place you wish to see from the place's list.
2. Click on the Contact tab, located at the top of the page. To enter and alter the place's data, press the Edit button/the pencil icon).
4. Scroll down to the comment section, click on it and start typing your note. When you're done click on submit.
When you submit your comment it will display now at the top of the screen, above your contact information but also in the comment field you have entered it. You can always edit and update your note and it can contain up to 4k characters.
Please note that there is a design difference between Android and iOS devices so on Android when filled out, the comment section will appear as Note while on iOS devices the section will remain named as Comment.