If I spend one night in salisbury to see stonehenge is there another place near there worth seeing?>

And on the edge of Salisbury Old Sarum is a neat site too -(especially if you read the famous book by Edward Rutheford "Sarum"):

http://www.english-heritage.org.uk/v...ces/old-sarum/

https://www.google.com/search?q=old+...w=1745&bih=863

And leave time for Salisbury the city - I loved walking south of town just a tad for the famous vista of Salisbury Cathedral looming over bucolic meadows that Constaable and others put on now famous canvasses:

https://www.google.com/search?q=sali...w=1745&bih=863

great - I will check that out too !

Where did you get the idea that Bath and York are similar?

You might check this site for accommodation, although in May the universities will still be in session.

http://www.universityrooms.com

For Salisbury check out B&Bs - lots on edges of town at a fraction of a hotel for a single and airbnb may be fine in Salisbury too.

http://www.bedandbreakfasts.co.uk/sa...mation-centre/

Plenty of inexpensive (vs hotels for a single) B&Bs in Salisbury. Ditto for York.