There really isn't enough information here for someone to give you a proper answer.What you need to do is calculate those tax savings over the next 5-7 years (or however long you plan to stay in the house) vs. what the interest rate reduction will save you over that time period.

Most tenants stay for 2 years bringing our vacancy rate to 1.9%) 

They can live in the unit, stay at a friends or family members, or rent a hotel themselves.

This way, you could rent out a room (or rooms) if you decide to stay, or rent the whole place out if you move.

When they enter them into RentRedi they stay there until they are resolved and my partner can see them immediately as well.

If managing the STR is no longer sustainable @Robbie Shiver, here are a few alternative options to explore:Mid-Term Rentals: Consider marketing to travel nurses or corporate relocations for stays of 1-6 months.

I have a guest nearing the end of their stay who would like to extend for an additional week.

Only do this if you'll be staying in the house for a long time.

Start small with manageable properties, mitigate risk with house hacking or partnerships, and stay active in the community.

Guest checks out, cleaners arrive to clean, conduct post stay inspection, and reset the home for next guest.