<p>This study was conducted to evaluate the effectiveness of breastfeeding behavior development training involving the use of videos and simulators with mothers whose babies were in the neonatal intensive care unit and who were staying in mothers’ hotels. The study was conducted in June 2022 and March 2023 in a state hospital with 100 volunteer participating mothers. Study control group (<i>n</i> = 33), video training group (<i>n</i> = 33), simulator training group (<i>n</i> = 34). The study was conducted with a randomized controlled pretest/posttest control group trial model. Data were collected with a sociodemographic information questionnaire, a breastfeeding self-efficacy scale (short form), and a maternal attachment scale. Pretest scores did not significantly differ between groups (<i>p</i> &gt; 0.05). After training, post-test means for breastfeeding self-efficacy were 57.21 ± 9.24 in the video group, 63.38 ± 5.19 in the simulator group and 57.09 ± 9.04 in the control group, and retest means were 62.91 ± 6.37 in the video group and 66.44 ± 3.88 in the simulator group. Maternal attachment posttest means were 84.4 ± 7.82 in the video group, 92.62 ± 4.92 in the simulator group and 90.36 ± 7.01 in the control group, and retest means were 91.88 ± 8.47 in the video group and 94.88 ± 6.18 in the simulator group. The breastfeeding self-efficacy, maternal attachment and retest mean scores significantly increased in the simulator group (<i>p</i> &lt; 0.05). This study revealed that breastfeeding training given to women with simulator support was more effective than training given via video methods in terms of breastfeeding success, the perception of breastfeeding self-efficacy, and maternal attachment. It can be said that staying in a mother hotel is a supportive practice for mothers to breastfeed their babies frequently when appropriate conditions are created and to establish maternal bonding.</p>