Booked the Amaroo thru the helpful Busselton Visitor Centre and it was all I expected being older style motel with above average unit size and usual facilities. Has the advantage of being within a couple hundred metres of the town centre but quite a distance to the foreshore. Back units set up in a large courtyard but front units back onto a busy road and I'm not sure any discount makes up for that. Access after hours to the courtyard is unrestrained with a non gated side entrance allowing for anybody to intrude.
Motel owners are friendly and helpful.
If you don't want a resort and wish to use an inexpensive plain motel close to town then this one will fit the bill.