A few days worth of down time will certainly recharge the batteries.

Especially given that SPI has a lot of down time (summer) when I could probably expect quite a bit of vacancy it didn't seem like a better proposition than long term rentals I'm doing. 

We did the boiler upgrade because the boiler was taking $500/yr to keep running, and the downtime was hell on the tenants. 

As of now, since I am on down time I am collecting the rent personally every month which gives me access to the interior of the house and she/they keep it tidy.

During the down time you can study the different areas of real estate and strategies. 

It is always good to be productive but downtime and time with family/friends is just as important.  

Enjoy a bit of down time. 

You have to calculate lost rent for downtime of 1 to 2 months and make ready cost.So if unit takes 5,000 to completely reno with down rent costs would take about 2 years with a good tenant paying on time with no capex issues to break even.

Tell her you will sue her for any down time until you find another tenant for her not living up to her end of the lease. 

With all your down time you should read "Your Money or Your Life" by Vicky Robin/Joe Dominguez, and "The Millionaire Next Door" by Thomas Stanley.