Piano Answers

I’ve been playing piano for a while now (about 6 years on & off, recently self-teaching) on a player piano that is about 80-100 years old, given to my family as a gift. While it has a gorgeous sound, it is often out of tune. I have recently began playing contemporary pop, country, & alternative pieces in order to get back into playing, as well as to improve my voice. I’m worried that singing to an out-of-tune piano (being so old, it gets out of tune really fast when we have it tuned) will get my voice into some bad habits, so I’ve been wanting to save up for a keyboard. No maintenance costs, plus the privacy of practicing in my room. I’d like one that is under $250. Also, are there any models that have a microphone to record my singing? This is not necessary, though. Any brand/model recommendations?