hi Bright - not sure what the legal/financial situation is wrt to Condo. maybe this is a good time to sort it out?
If you own it 50/50 maybe you need a semi formal agreement about who uses it and when (a bit like a custody arrangement!) Your h will not like this, but maybe a simple agreement about who gets first pick at dates etc would help clarify things. Suggest you wait until after this weekend to do that.