Do not stay at Extended Stay Carlsbad as there is no manager on duty after 10pm. When I stayed there was uncontrolled partying with about 50 people until 2.30am on Friday and Saturday nights with a keg of beer and people urinating in the gardens around the pool and yahooing. They started coming in 4's and 5's at around 11pm and I finally phone the police at 2.30am when it looked like it would continue all night.
The manager next day did not care.

I would like to tell anyone reading this-- do NOT stay at the Extended Stay on Valley View! There is another Extended Stay America on East Flamingo... stay at that one. I stayed there on my previous trip to Vegas, and it was 500 times better, for the same price!
This Extended Stay on Valley View *is* right off the strip (the end w Rio and the Palms). However, once you turn down Valley View you are in a totally trashy neighborhood, and not well-lit at all. I did not feel safe in that area. In fact, the first night there, our car was broken into!!
The front desk staff was polite enough, but very slow to check us in. We got to the room, and I was so grossed out. There were clumps of black hair all over the floor, and dirty fingerprints all over the walls. One of the cups in the kitchen cupboard was actually stuck in the cabinet. Ew!
The bathroom was small and cramped, and when I went to take a shower the shower head actually FELL OFF. It was bizzarre. Furthermore, the beds were incredibly hard, and the sheets were scratchy.
I paid $80 / night for this room, which is the same price I payed per night at the larger, newer, cleaner, safer, more comfortable Extended Stay on Flamingo. Additionally, I decided to stay an extra night on my trip and was able to stay at a nice, although older hotel ON the strip (The Tropicana) for that same price! (It was a Sunday night).
So please, learn from my mistakes and do NOT stay here!

I stayed at ESA Valley View for three days and two nights. I got an excellent rate on hotwire($39/night). Very reasonable for Friday and Saturday nights in Vegas. The hotel staff was courteous and friendly. The room was huge. It had seperate living room and bedroom and kitchen with appliances, dinnerware and silverware. Very clean. More than enough space and more than enough parking spaces. I will indeed stay here again.

I recently stayed at the Extended Stay America on South Valley View for one Friday night and had a very good experience. For a $35 Priceline 2* "West of Strip" bid, I got a bedroom with king-size bed (and a comfortably firm mattress), a separate room with combined sitting area/kitchen, a small but clean bathroom, and a walk-in closet. The hotel was less than a 10 minute walk to the Rio, which has good restaurants and a free shuttle to the Strip. I would definitely return to this ESA hotel any time I wanted an inexpensive place to stay that still provided reasonably good access to the Strip.