Background:
We live in Germany. We are fully paid up with rent. Never been late or in arrears (in fact usually pay early). Get on with our neighbors and maintain the property as agreed in the contract. Up until now we thought we were ok with the landlord.
Problem:
Yesterday we received a handwritten letter that the landlord wants us to leave our flat by the end of August. Apparently they want to move in themselves but we have heard from our neighbors that they want to know when we are out so they can show people round 
As you can imagine we are stunned and are frantically searching for a new place. Our Ds has just started kindergarten and my husband starts a new job in August meaning he will be away mon-Fri. I am also expecting our second baby at the start of September so....not great timing.
Now my aibu: I am starting to pack and sort out now (rather than when I am 9 months pregnant) and we may find somewhere that wants us to move in July. Would we be unreasonable to leave earlier and not redecorate the flat? We had just finished redecorating when they served us notice and I genuinely don't think that they will give us our money back anyway, regardless of what we do. We would leave the place clean and tidy but I just don't see why we should pay more money to restore their cheap wallpaper.
A lawyer has said that what they are doing is illegal but we don't have the money to fight this. Plus we may buy us an extra month tops but then I would be returning from hospital with a newborn and a young child, alone and then having to deal with a move and shitty landlords.
I know it will get nasty as the man has already tried to intimidate me.