Виджет карт с высотой в 400px и более:
<iframe src="https://yandex.ru/map-widget/v1/?ll=37.735016%2C55.720367&mode=poi&poi%5Bpoint%5D=37.734972%2C55.719644&poi%5Buri%5D=ymapsbm1%3A%2F%2Forg%3Foid%3D1037669933&z=15.93" width="100%" height="400" frameborder="1" allowfullscreen="true" style="position:relative;"></iframe></div>
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Виджет карты с высотой в 399px и менее
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<iframe src="https://yandex.ru/map-widget/v1/?ll=37.735016%2C55.720367&mode=poi&poi%5Bpoint%5D=37.734972%2C55.719644&poi%5Buri%5D=ymapsbm1%3A%2F%2Forg%3Foid%3D1037669933&z=15.93" width="100%" height="300" frameborder="1" allowfullscreen="true" style="position:relative;"></iframe></div>

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