There is certainly no limit to how often you can use your baby travel bed. They are designed for travel and easy portability but they are also designed with safety and comfort in mind so there is no reason not to use them all the time if that is what works best for your family. You may want to use one of the baby travel beds that is able to be used in an adult bed so that you can safely co-sleep with your little one full-time with no worries.
Alternatively, you may be cramped for space and need to use a baby travel bed as an alternative to a large crib that takes up a lot of valuable room. This could be the perfect solution for families that live in small apartments or perhaps those staying with family long-term.