Travelodge Las Vegas Center Strip (Short Walk)
Friday and Saturday ~$135 per night.
Circus Circus (North Strip would need car or other transport option to get to Planet Hollywood)
Weekend average ~$84 per night
Riviera (Next to Circus Circus)
Weekend average ~$98 per night
Check the overflow hotel page for a few other options!
Shop around and you'll likely find other deals for other hotels!