It would be wise to rectify it before transfer of title so your starting off clean and hopefully won't have any issues when you go to sell down the road. 

At that point I dont know investing would make any sense, I have heard scary stories I was thinking about short term rentals but that needs constant cleaning after guests and conpetition is very high my friend spent almost 200k out of pockets to buy a property for airbnb and he got 17 bookings per year....

Then there’s city regulations—some places heavily restrict short-term rentals, so you’ve got to check the rules.If you find the right spot and automate stuff (guest communication, cleaning, etc.), it can be profitable.

Very good resource for getting set up with STR property managers, cleaning services, realtors, lenders, etc. https://www.getchalet.com/

The current owner bought it for $30K and I know they had to clean up a lot of title work and started doing repairs. 

Since Covid this is just the way of the world with STR/MTRs, it can require more cleaning and cause damage but if you want to complete it is a necessity. 

Good afternoon, I currently live in the UK in a property owned here with my partner, I have two properties in WA- One is a long term rental property with no mortgage that I inherited in 2020 and the other is currently used as an AirBnb with a mortgage that I am still paying and have been for the past 4 years.I am looking to sell the house that has no mortgage however we have to wait untill June for the tenants to move out and it is unlikely that it will sell before then as it needs some work done to clean it up for listing.What are my options currently?

I have helped quite a few investors dispose of their 2-4 units this year and they have been cleaning house.  

Dressers with a nice clean look that have deep drawers and smooth rollers are well over $1K and often close to $2K.

I had several tenants complain that they are impossible to keep clean.