I added pictures of the inside. And yes it will mostly beginners so it doesnt have to be perfect.
This can be true but it's more to the point to define what beginners do need.
Let's start by identifying different components of music learning:
A) Like many thing it is fact learning -- "this is 4/4 time" a mark on this line means "A" , etc etc.
B) It is ear learning... "C" sounds like this ... a C major chord sounds like this ... this is how a G minor seventh chord sounds ... etc. etc.
C) It is also muscle learning. An example of muscle learning is when you go to reach for the headlights in your new car and they aren't where your body learned they were in the old car. In music one learns control over where the notes are and how hard to press them.
So, here's what a beginner does need in terms of piano performance. They don't need a new 9' concert grand -- or anything close to that -- but they do need:
1) A piano that can be in tune (the notes agree with each other) at the correct pitch level. It's not fair to a beginner to be forced to play the wrong note when the hit the correct key because "C" is sounding at "B". Unlike all other stringed instruments which must be tuned every time they are played, a piano will stay in tune much longer -- maybe several months. But if a piano has gone several years, it may take a couple of appointments to make the tuning stable at the correct pitch level. If tuning pins are loose or there are other structural issues, additional restorative work may be needed in order for the instrument to be tunable.
2) Mechanical consistency. In addition to the tone-producing part of the piano, there is also a complex mechanism to transfer the player's finger movements at the key through the hammers to the strings so it will sound. This mechanical system tends not to get much attention even when a piano is regularly tuned -- thus continuing to degrade in performance. Someone learning the piano must have a consistent key response so they don't subconsciously learn that "C is harder to play than B" and "This F note sometimes strikes twice with just one finger press". Music is the flow of sound through time and anything interrupting that flow interrupts the process of making music. Also, one of the most difficult skills for the beginner to learn is "expression". It is extremely difficult to learn musical expression when the action is so out of adjustment that notes won't play softly or won't repeat.
So, in tune and a properly adjusted action that gives control and consistency. That's what beginners definitely do need.