It’s pretty good, covers a huge area, mind, with relatively few ways to access the deeper sections. Gets very busy in the winter with lots coming down for the starling murmerations.
I’ve stood behind a big bunch of people at one of the main observation points, with everyone looking out across the water, when a bustard has flown slowly across behind them, and I think I was one of only half a dozen people who saw it!
I’d actually seen three that day, but that was very lucky.
If you ever get down that way, the car park is at Ashcott Corner, south of Meare.
The blue areas marked don’t really give a clue to how big an area the reserve covers, it goes either side of the road down from Meare.