There are a few good hotels, and B&B places locally, but not many campsites. As locals we have no experience of the quality and therefore list for information only, however, equally we have no negative information on the entries below

Five Star Taxis office is just down London Rd (300 yds from Sub Rooms) 01453 755511.

B&B
the London Hotel is less than 5 minutes walk from the Sub Rooms.
30/31 London Rd Stroud, GL5 2AJ     01453 759992   the-london-hotel.co.uk

The Old Nelson GL5 4AF 0870 9906378 is not much further walking distance and a little more up-market.

Stonehouse Court Hotel more up-market still, between M5 and Stroud, about 1 mile from J13.

the Bear at Rodborough is by open common grazing land. Also up-market

Beechcroft - B&B Brownshill, Stroud, 01453 883422
Sleeps up to 4; £25 - £30 pp per night.  Quietly situated Edwardian house with large garden.
Homemade bread and preserves Locally sourced and homegrown food. No smoking

Camping & Caravans
Gables Farm, Moreton Valence, GL2 7ND   01452 720331   on the A38 about level with the halfway point between J12 & J13 M5

Hogsdown Farm Camping Site  Lower Wick, Dursley GL11 6DS    01453 810224  hogsdown farm  &  more web info

Tudor Caravan Park  Shepherds Patch, Slimbridge, GL2 7BP    01453 890483   tudorcaravanpark.co.uk

Riverside Caravan Park,  the George Inn, Bristol Rd Cambridge GL2 7AL   01453 890270

the Daneway, nr Sapperton GL7 6LN map , 01285 760297   Tents ONLY. But they do have Tues music sessions.

Cirencester Park Caravan Club Site46 Stroud Road Cirencester GL7 1UT    01285 6515