When it comes to accommodation and other basic amenities, Srinagar Leh highway has far better and more options than Manali Leh highway primarily because there are several well known towns on this route. Adding to this is also the fact that it remains open for a longer duration than Manali Leh highway. If you are planning to travel on this road, below is some information on where you may consider halting for the night, a list of places where you can find accommodation on Srinagar Leh highway.
Srinagar: Srinagar is a major tourist destination and you should have no difficulty to find a good hotel here within every price range. Another great option to stay is the houseboats on Dal Lake but they may pinch a little when it comes to the charges. You can easily find a good hotel in Srinagar for as less as Rs. 500 for the night. Houseboat, depending on your negotiation skills, can cost you anywhere from Rs. 1500 / 2000 per person to Rs. 3000 or more.
Sonmarg: Sonmarg has a decent number of hotels available, both luxury as well as within a reasonable price range.
Drass: Great place to stay and you can easily find a hotel here for as less as Rs. 300 for the night, depending on your negotiation skills.
Kargil: Major town on this route. Most of the people plying on this highway break their journey at Kargil due to which there is there are plenty of hotels and guest houses here. However, if you are on a budget you may have difficulty finding one within your price range.
Mulbekh: Small town but a few accommodation options available including a J&K tourism bungalow.
Lamayuru: Few guest houses available here
Alchi / Likir: Few home stay options available here
Leh: Plenty of hotels / guest houses available in Leh
Most people tend to break their journey at Kargil for the night, no matter which side they are travelling from. If you do not mind paying a little extra, then staying at Kargil works fine however if you are on a budgeted trip, then you may want to skip Kargil altogether. If you are travelling from Srinagar to Leh, you may want to break the journey at either Sonmarg or Drass because you can easily find a reasonably priced hotel at both the places. If you are travelling from Leh to Srinagar, then a better option in terms of cost would be to either break the journey at Lamayuru or Mulbekh. Another option is to start really early from Leh, make it all the way to Drass and stay there for the night. Another plus point with staying is Drass is that you can then reach Srinagar by afternoon which gives you plenty of time for hotel hunting in Srinagar.