You may be making it more complicated because you are already emotionally involved.Ignore your current situation.  

No reason to get emotional, just go by the numbers.

Flooding is defined as general or temporary condition of partial or complete inundation of a dwelling caused by any of the following:the overflow of inland or tidal watersthe unusual and rapid accumulation of runoff or surface waters from any established water source such as a river, stream, or drainage ditchexcessive rainfall.What happens if the landlord fails to provide the addendum and the dwelling floods?

Don't get emotional and there is always another auction next week. 

I bought it on emotion.

We use the Kwikset Powerbolt which you can set a temporary code or a one time use code so they can’t go back in.

After the tenant moves, it will cost me about $25,000 to gut and remodel the apartment and I can easily get $700 per month more for rent, or $8400 per year more, or $84,000 more every 10 years plus I immediately increase the value of the property $8400 per year more income time 16 Gross Multiplier = $134,400 increased property value + $84,0000 additional rent in 10 years = $218,400.Would you let your emotions and feelings force you to lose $218,400.

Remember that for most people selling their home is an emotional issue. 

One of the owner is problematic emotionally, socially and financially.

People sneak them in or get and Emotional Support Animal (ESA).