The Mikvaot don't belong to Chabad, so for info/appointments please call the people in charge directly.
Mikvah - south of Amsterdam "Beit Hamidrash Etz Chaim"
An appointment must be made in advance
Transportation
Tram: 5
Name of stop: van Boshuizenstraat
The entrance is via the back-door, on the street called Valkenstein
Mikvah - Amstelveen
An appointment must be made in advance
Transportation:
Tram: 5 or 25
Name of stop: Onderuit