Can a Tamattu haci enter ihram for Hac from their hotel in Mekke?

Yes, a Tamattu haci enters ihram for Hac on the 8th of Dhul Hijjah from their place of stay in Mekke. They do not need to go to any miqat. Hz. Peygamber (sallallahu aleyhi ve sellem) commanded his companions who were performing Tamattu to enter ihram for Hac from their dwellings. Sheikh Ibn Baz said: 'The one performing Tamattu enters ihram for Hac from his place — whether his hotel, the Haram, or wherever he may be in Mekke' (Fatawa Ibn Baz, vol. 16).