It really depends on what you plan on doing at the hotel you stay at. Are you going to sleep there and leave all day for the parks? Will you be spending time at the hotel and using the facilities ie: pool, restaraunts etc...
When I go to WDW I need a bed and a shower. I check the room and make sure there are no bedbugs and the bathroom works. Of course I want it to be in a safe area too. I sleep there and leave for the parks in the am around 9 am. I get back to the room when the parks close, sometimes 11 pm. Sleep, shower in the am and go to the parks again. So Seralargo and all other hotels on 192 are fine for me.
I have stayed at the Howard Johnson across the street for $23 a night. We can go to Waffle House or I-Hop for bfst since both are right next to the hotel. Then off to the parks.
here are some reviews of the hotel you are asking about. Make sure to look at the photos submitted by guests at the resort.
www.tripadvisor.com/Hotel_Review-g34352-d88087-Reviews-Seralago