I have been to some damn nice hotels so it gets hard to compare after a while. Everyone starts with a 3 and if you kick ass to another level in all regards (W Barcelona, St Regis Mumbai) then and only then do you get a 5. But Sheraton Great Valley gets a super high fist bump for their excellent service. Rocco is chill AF to go sit and talk to at the bar (basically any night of the week). Tom will give you a warm welcome and be super polite while doing it. After a few months at this hotel I really enjoyed shooting the shit with him. Carrie is the absolute best. She is the manager and once went as far as helping me do my laundry when the machine was broken. This is definitely going above and beyond.
Food at the bar is ... okay at best. Wings are solid.
Suite upgrades come with a hot tub. Unfortunately I was usually working too much to take full advantage of it. The beds are pretty comfy (pillows could be better). The loyunge has a pretty decent breakfast and free drinks during the evening hors d'ouvres hour, yayyyy!!!! As a heads up, I have had wifi issues here. That is something that could definitely be improved.
I know some people in the area stay at the Marriott in Malvern. After one week there, the Sheraton was clearly the better option.