Hostels are mostly preferred by backpackers and young travellers since you have to live in a dormitory and it is assumed such hostels provide only basic facilities. But, not all hostels are like that. An example in case is the newly constructed 3 Howw Hostel where I have been staying for the last 6 days. This place is sparklingly clean, air-conditioned, has free wi-fi, is affordable, is safe, puts you in the company of interesting travellers and gives you amenities like safety lockers, large size television, option of a light breakfast in the morning and much more.
The best part about this place are its 3 co-founders, Kho, Priaw and Nadis. These guys are friends from university who started this place in Sep 2012. The hostel is located on Samsen Soi 4 and about 6-7 minutes walk from the famous Khao Sao area of Bangkok. Most of the markets, the road side stalls, the Khao San bars, the cooking classes are all close by. And since the hostel is located close to a temple, the road around it is very safe, less crowded and less noisy.
The hostel has a 10-bed mixed dormitory, a female dormitory, 6 bed and 4 bed dormitories and private rooms with shared or private bathrooms. The cost varies from 370 baht per person per night for a mixed bed dormitory to around 1000 baht for a private deluxe room. Cost can increase during the holiday seasons and some bargains can be struck if you are staying for a longer duration. The hostel owners will also ensure that they go out of their way to help you with directions, planning, arranging tours, commute and all the good stuff. They are really keen to ensure that you have a good time staying with them.
For photos about the place look them up on their facebook page. You can also book with them through booking.com, agoda.com and hostelworld.com.
I would definitely recommend staying with them if you their price falls within your budget. I will definitely return to stay with them whenever I am in Bangkok. I really like the place.