If you travel with small children, but do not feel like bringing bulky gear for children to Spain, there are several companies that offer common children's items and baby gear for rent.
Babytravelling provides rental products for toddlers (for bathing, feeding, sleeping, transport and walks), servicing Barcelona, Madrid and Valencia, and other cities may be available for a delivery fee. Inquire for more information by phone (+34) 661 857 785.
Alquiler Carrito BebГ© has several models of strollers, baby cots and cribs, high seats and car seats on their list. Daily rentals and long-term offers are available. You can get more information on their website or by phone (+34) 902 955 583.
Babies on Wheels has several models of strollers, baby cots and cribs, high seats, stroller umbrellas and more. Daily, weekly and monthly rentals are available, with a small refundable security deposit. You can get more information by phone at (+34) 648 470 591.