30 Day Shred
Blogilates (youtube channel--I highly recommend you check it out)
Running up and down the stairs is great but doing stairs/sprints is more likely to build muscle than to slim your legs and burn fat like long distance would.
Other tips you may or may not know/already abide by:
8+ glasses of water per day helps to avoid water retention/bloating
Cutting down on your sodium helps reduce water retention/bloating as well
ALWAYS take the stairs instead of the elevator if you can, wherever you may be going
Green Tea boosts your metabolism and aids in weight loss (
(you need an account to see links)), is zero cals and tastes good too!
Drinking ice cold water actually burns a little bit of calories because your body needs to expend energy in order to heat it up and digest it, while drinking hot water (or tea, broth, etc.) makes you feel full
+more
Overall though, you can't out-exercise a bad diet so clean eating is your best bet. You want to make sure you're eating enough though, so calculate your BMR and TDEE.
If you want more tips/resources/workouts my collection is virtually endless. Just let me know.