Normally hotels have a 3pm check in. If you want earlier check in you should contact them directly. They will probably still charge you for a 24 hour stay if they have room availability

Dear Talitaz, Greetings from Hampton By Hilton Doha. Thank you for your interest about our hotel, Regarding room bookings, we always recommend advance room charge payments to guarantee the reservations. For stay deposit we do not require any deposit, we only require capturing your credit card details if it is not on-file. We also offer complimentary breakfast to all our guests and awesome Starbucks coffee shop on chargeable basis at our lobby. Please let us know if we can assist you with future bookings or arrangements. Thank you again for contacting us. Best regards. Hampton By Hilton Team.

Dear Talitaz , Thank you for your interest about Hampton by Hilton Doha. Please be informed that we are located approximately 3 to 5 min from the Metro station ( National Museum) Golden line . We look forwards welcoming you the soonest. Let us know if we can be of further assistance. Thank you and best regards Hampton by Hilton Doha.