I have a 2016 Siesta Sprinter the 24ST, rear twin model. Over 4 years and 50,000 miles, basically trouble free..
The murphy bed model is more open during day use. The rear bath is a nice feature. Like any RV, the layout you prefer is very important.
The Sprinter models are easy to drive, reliable and economical.. Mercedes dealer routine maintenance costs are high, but oil change interval is 20,000 miles. This may be different on new models..
U.S. Coast Guard retired- 1956-1985
Lily- the Pug
1972 Moto Guzzi Eldorado