What kind of bed do you want? Are you lazy and do you know you’re not going to change the bed set up every day and would just prefer a fixed bed? With the advantage that it gives gives you more storage under the bed. Or, do you want to use that space for a bed as well as have a big table where you can eat or work. A plus for this set up is that you can also use this space to hang out with friends. Or you go somewhere in between such as a pull out couch/bed, creating more open space during the day but still enjoying a bigger bed to sleep in.
Moreover, how big do you want your bed to be? Do you like laying in your bed like a starfish or is a one-person bed big enough? Besides, obviously the bigger the bed the smaller the rest of your layout will be.