Hello, Radhika
So here I am suggesting you some of the best yoga centers or ashrams for yoga and meditation :
1. Parmarth Niketan
2. Swami Dayanand Ashram
3. Sivananda Ashram
4. Yoga Niketan
5. Osho Gangadham Ashram
now, here's the some of best hostel in Rishikesh -
1. Skyard Hostel, Rishikesh
2. Blabla Hostel, Rishikesh
3. goSTOPS, Rishikesh
4. Live Free Hostel, Rishikesh
5. Blue Jay Hostel, Rishikesh
I hope this information is going to help you.