I had a long stay of two months in aichas studio in den haag. It suited my needs perfectly since it was well located near Holland spoor train station (only a 4 minute slow walk)
Shops were across the street and the city centre was walkable.
The studio itself has everything you need for a basic stay. No luxury, but plain good. Everything is functional and working and aicha even brought a new microwave.
Aicha was very nice and easygoing. Easy to contact and helpfull but not obtrusive. I can recommend a stay here if you are looking for a nice studio in den haag