The market and area is very solid, all major and minor appliances are no more than 5 years old.

Zillow says it's worth no more than 275k.

No more than 70% LTV.

Most flippers will want to pay no more than 70% of ARV-expenses.

Which means, all-in, you'd need to have only paid no more than 70% of its (subsequent) appraised value.

Knowing nothing but what you've written here, I'd offer no more than $125k

The end user wants to have no more than 70% of the appraised value in it in order to be able to sell at a profit. 70% of appraised value is not where you buy if you want to wholesale or assign it."

You could also focus on the great financial advantages of renting/down-sizing (travel more, no more yard to care for/repairs, buy an RV, visit family more)Host a senior-focused event at your facility (maybe show an uncut version of Woodstock haha) or live music, a Social Security expert speaker or Doctor to address health issues, a fund-raiser, art show, etc. and hand out flyers with a special "one month free" coupon attached Have exercise classes for seniorsWeekly bingo nightsPromote your events for free on community calendars, newspapers, seniors sections of papersPrint door hangers and get some kids to hang the door hangers at trailer parks, older communitiesEncourage your current tenants to invite friendsRent a 15-passenger bus ($50) and offer free transportation to key eventsSponsor events at senior centers in the areaCo-Sponsor service club (Rotary, Kiwanis, etc who have many senior members) eventsPut up banners and balloons when you have eventsI hope at least a few of those ideas might spark some interest.

No more.

Quit flipping and there is no more income.