Admittedly floor beds or low beds aren't for everyone. The
elderly would find them uncomfortably low and hard on the knees, but young
parents with a toddler will eliminate the fear of the baby rolling off a high
bed. As with everything, there are advantages and disadvantages with the style.
If you are thinking of going that route, here's the pros and cons listed for
practicality and style both.
Easy On The Pocket

Floor beds can be high on style and low on investment
This may seem like a no brainer, but a simple mattress on the floor is
cheaper than a formal bed frame! You can choose to do without the bed frame and
the headboard or retain the headboard to create the look of a bed without an
elevated frame. It'll be easier on the pocket if you've just spent on a new
apartment and are being judicious with your finances. That said, floor beds are
not a formal look, and may not suit all decor themes.
Kid Friendly
A floor bed with a cute house shaped frame in a kids room
Floor beds are a wonderful option for the kids room to encourage them to
roll around and play without sharp corners and hard surfaces to cause injury. If you
have a toddler in the house, floor beds eliminate the fear of the baby rolling
off the bed from a height as mentioned before. In fact floor beds are
recommended as an option to cribs in the Montessori method. Although the low
elevation is a plus for kids, it's a major negative for the elderly or disabled
as the low height is a strain on already stressed joints like the knees and
hips.
The Montessori method recommends floor beds for babies

In a tropical climate sleeping closer to the floor is cooler because
the area closest to the floor is the coolest in a room as heated air rises.
This is a much more subtle application of the basic law of physics that is used
to lift hot air balloons! The hot air in your room will naturally rise to be
replaced by cooler air, therefore the lower the elevation of your body while
you sleep, the cooler the area. A floor bed could help reduce your air
conditioning bills in the summer!
Minimalist

Floor beds fit right in with the new modern-contemporary vibe in the decor world. Depending on your taste, you can choose an angular low slung frame or a mattress on the floor. A minimal look is perfect for a small apartment as an uncluttered space feels larger than an overly decorated ornate option.
Save Space
A floor bed is versatile and flexible, if you need the space
for a home office or a kids play area all you have to do is roll it away and you have
empty room space to do as you please. A floor bed can also be a great option
for a spare bedroom as you can turn it into a guest room when you need to while
using it everyday as a home office space with the bed rolled up.
Visual Clarity
Low slung beds take up less visual space therefore making a room look larger as more space is free or unoccupied. A large bed frame can make a room look overfull and claustrophobic. Resist the temptation to buy a conventional bed for a small room instead opt for a mattress on the floor or for a low bed frame.
Environment Savvy
A floor bed uses less materials, even if you opt for a minimal low slung frame, the materials required to manufacture it will be fewer than a conventional bed frame. Fewer materials equal a smaller carbon footprint! So a floor bed is better for the environment too.
If you decide to ditch your conventional bed, at the least,
you'll be choosing something different style-wise, and with the list above
you'll be able to make an informed decision.