Troubling Elastic search query that seems to ignore both size and from parameters

gistfile1.txt

curl -XPOST 'http://192.168.50.2:9200/prod_brik/room/_search'
{
    "query": {
        "bool": {
            "must": {
                "has_parent": {
                    "type": "premises",
                    "score_mode": "score",
                    "query": {
                        "bool": {
                            "must": {
                                "match": {
                                    "street": {
                                        "query": "Dansaertstraat",
                                        "minimum_should_match": "70%"
                                    }
                                },
                                "filter": {
                                    "bool": {
                                        "must": [
                                            {
                                                "term": {
                                                    "status_published": 1
                                                }
                                            },
                                            {
                                                "term": {
                                                    "status_visible": 1
                                                }
                                            },
                                            {
                                                "term": {
                                                    "status_approved": 1
                                                }
                                            }
                                        ]
                                    }
                                }
                            }
                        }
                    }
                },
                "filter": {
                    "bool": {
                        "must": [
                            {
                                "range": {
                                    "rent_basic": {
                                        "gte": "200",
                                        "lte": "600"
                                    }
                                }
                            },
                            {
                                "nested": {
                                    "path": "period",
                                    "score_mode": "none",
                                    "query": {
                                        "constant_score": {
                                            "filter": {
                                                "bool": {
                                                    "must": [
                                                        {
                                                            "term": {
                                                                "period.available": 1
                                                            }
                                                        },
                                                        {
                                                            "range": {
                                                                "period.start": {
                                                                    "lte": 1505433601
                                                                }
                                                            }
                                                        },
                                                        {
                                                            "range": {
                                                                "period.end": {
                                                                    "gte": 1474662357
                                                                }
                                                            }
                                                        }
                                                    ]
                                                }
                                            }
                                        }
                                    }
                                }
                            },
                            {
                                "term": {
                                    "status_published": 1
                                }
                            },
                            {
                                "term": {
                                    "status_visible": 1
                                }
                            },
                            {
                                "term": {
                                    "status_approved": 1
                                }
                            }
                        ]
                    }
                }
            }
        }
    },
    "sort": [
        "_score",
        {
            "changed": "desc"
        }
    ],
    "from": 2,
    "size": 2,
    "_source": false
}