Tax treatment is probably a secondary consideration.

How is their treatment of retirement income attracting retirees?

There is some dual promote and dual fee here.Aside from those nuances, the two options are very similar as far as depreciation and tax treatment.  

Go with the EPA-suggested bleach treatment and you'll be fine.

If you treat them good they will return the same treatment.

They say confession is good for the soul so here goes.....my CPA suggested that I could qualify as a 'real estate professional' and take advantage of the very favorable IRS tax treatment which accrue to investors with that designation.

And when questioned on treatment of the property or complaints of other tenants, the accusations and text essays flew. 

Woody has made no claim for section 195 treatment. 

The tax treatment of an IRA is what it is, and it is different than the tax treatment of holding real estate outside of an IRA.

That would mean that at this time you do not qualify for Section 121 exclusion of your capital gains on the sale of the property, because you have not owned it and occupied it as your primary residence for two of the past five years.So, your question is can you move back into the property and occupy it for two years and qualify for the Section 121 exclusion of up to the maximum limit of either $250,000 for a single taxpayer or $500,000 for a married taxpayer.The answer is that you cannot.If you move into the property for two years and qualify for Section 121 treatment, you will have two years of "qualified use," and a number of years of "non-qualified use" that would be equal to the number of years you have owned the property minus the two years of "qualified use" as a primary residence.