I'm looking for a word or phrase that can describe something familiar, but not quite the same

I’m looking for something that can describe a sense of familiarity, unfamiliarity, nostalgia, and bittersweetness. I’ve considered deja vu, but it doesn’t capture the nostalgia or bittersweetness.

Maybe this will give a better idea of what I’m feeling, but it pertains to the chance that I’ll be moving into an apartment that’s attached to a former residency of mine. I’m looking forward to moving there since I have a lot of amazing memories from that location, but I have this weird anticipated feeling of familiarity and unfamiliarity since the apartment I will be living in isn’t quite the same. To top it off, the bittersweetness comes from an unresolved problem I have with a former and incredibly close friend of mine, who used to live a few houses down from that apartment.

It’s a hefty combination of feelings for one word or phrase to describe, I know, but it’s really bothering me that I can’t find a much shorter descriptor of what I’m feeling at the moment. (Also I’m sorry for being so wordy!)