I've done over 125 escape rooms in Seattle, LA, New Orleans, Houston, and the Bay Area. I actively travel and seek out the best escape rooms in the US, so this review is catered specifically to enthusiasts looking for unique, high quality rooms.
Grandma's Master Plan - mid 4/5 | Rank 36/145 (Good room with a little something that makes the room distinctive. We will happily recommend these rooms to travelling enthusiasts or locals.)
Grandma's appears to be one of 60 Out's oldest rooms, and seems to be holding up fairly well over time. While the actual gameplay/puzzles are sort of showing their age, good stories / humor hold up much better over time, and the first half of Grandma's is full of that. This is a polished but a bit old standard escape room with a great theme/story in the first half, and a more disappointing second half. I really enjoy story/humor, so I think that this is still a good room for enthusiasts who enjoy that as well, and maybe less good for the people who care more about puzzles / set. Given that this is an old room, I'd really like to see the room be renovated and modernized - it's still a pretty unique room that has held up over time, and there's some potential for this to be great.
Set - The set starts off in your standard boring apartment set, but the theming of this being your beloved grandma allows the room to get a lot more out of this set than you would expect. There are constant reminders of your grandma and her life scattered around the room, and it adds an element of love to the room that you don't normally see compared to other sets where you're exploring the room of some rando serial killer. The later half of the game evolves the set in interesting and varied ways, though it loses a bit of the charm as the game regresses to a more standard type of set devoid of Grandma's love.
Story - Grandma is quite a character, and learning about her life and exploits is really whats makes this game as enjoyable as it was. There wasn't even that much in the room relatively speaking, but what was there was really fun and a treat to see. The story has a clear progression and there are certainly some twists along the way. The puzzles in the first half of the game were extremely on theme, and hilarious overall - the puzzles in the later half were also on theme, but much less fun due to the subject matter My main complaint was again, in the later half of the game, where the ending is fairly anti-climactic and grandma's involvement was minimal. Given how grandma is the emotional center of the room, it would have been nice if she was more involved in the later half of the game, and if the feel of the room actually lasted to the end of the room rather than turning into something way more generic.
Puzzles - The puzzles were fine, but standard and indicative of the rooms age. I remember a couple of neat puzzles that involved some physical props, but nothing else terribly memorable.
Player Recs - Same as always, enthusiasts should bring the minimum, beginners should bring around halfway between the minimum and maximum.
Personal Stats - Escaped with 3 enthusiasts in ~70 mins taking some hints.