it depends on what you are trying to convey. If you are talking about a space that is easy to navigate and has all the necessary amenities, then convenient is the right word. On the other hand, if you are looking for a space that is cozy and relaxing, then comfortable is the way to go.
A simple explanation would be:
If something is comfortable, it makes you feel nice, relaxed, or not stressed.
If something is convenient, it makes your life easier.
اگر چیزی comfortable باشد، باعث می شود احساس خوبی داشته باشید، آرامش داشته باشید یا استرس نداشته باشید.
اگر چیزی convenient باشد، زندگی شما را آسان تر می کند.
Examples:
This chair is very soft and comfortable. I can sit here and relax all day.
The metro station is next to my house. That’s very convenient