Laura2592, I am in the older market segment now, so I'll share with you my experience. Older people are looking for traditional settings where the property is aesthetically decorated with quality furniture and mattresses. Low furniture (including platform beds) is not functional, as it makes it difficult for us to get up and down -- hip, back, and knee issues, as well as arthritis . Hard chairs exacerbate any pain and makes us stiff. So while cushions will help the dining chairs, we need more back and tush comfort. Imagine us with these physical ailments sitting for long periods of time in low and hard furniture. This principle goes for high bar stools, ottomans, pub tables and chairs. While they are awesome choices for the a younger market segment, we generally find these settings uncomfortable. And, if the beds and linens are not 3.5/4 or 5 star hotel quality, this may also contribute to the discomfort. Think of it this way...how would you prepare your home for someone disable. You would definitely rethink your space, beds, sofa, and chairs. Likewise, this goes for the older market segment.
My answer to your first question is this, do you want to market to older people? They are the ones who travel a lot (retired). And if they are fortunate, they may have an elder in the bunch. For me, it is my mom who is 93. I often have to pass up homes that have low and hard furniture because she would have nowhere to sit. So, if you want this market segment, I recommend that you take the guest opinions on furnishings into account. An interior decorator should be able to help you strike the right balance of how to market to the young and older.
My answer to your second question is that if the older market segment experience any discomfort, they will most likely not revisit the space and will chip away at your ratings by mentioning their level of discomfort.
I hope this helps.