I am subleasing my bedroom in a new and clean 2-bedroom-2-bathroom apartment in the Kennedy Graduate Residences for the whole summer (June 23 to September 16). My roommate is a friendly (male) 4th year PhD student.

The bedroom, kitchen and your private bathroom are very large as you can see: https://rde.stanford.edu/studenthousing/kennedy-graduate-residences-0. I'll send you more pictures if you want.
You also have a full-size bed. You have access to a laundry room, a music practice room, a computer cluster, a lounge and few other things. This place is perfect for someone who needs a place on campus with a private bathroom and a big bedroom.

Dates are flexible (after June 23 or before Sept 16), but the more the better. I'll give you a discount if you take if for the whole summer ;)
Let me know if you're interested.