Maximillion's Underground Quarters & Tech Lab (Only Integra or Alucard can enter w/o Permission)

In the bowels of Hellsing Mansion, an old, abandoned bunker was transformed into a decked out living space and technological laboratory. It is only accessible by a number of secret passageways, and a ridiculous number of stairs spiraling down further and further underground.

A small portion of the space has been maintained as a Bunker/Underground Warroom that Maximillion himself doesn't use, but was his 'giving back' to the Hellsing Organization for housing him, and his high-end tastes. The Bunker/Warroom has no direct access points to his Living Space or Tech Lab.

(Quarters & Technological Laboratory)

Setting: Deep underground, former basement-style bunker; Converted into Maximillion's Quarters, which double as his Technological Laboratory (a bit less snazzy than the digs in the image, but just about as well decked-out with computers, etc)

Security: Alarms, Motion Detectors, Surveillance (various forms), and heavily reinforced doors with Anti-Undead Silver-laced repellant devices for targeting intruders. The lab is connected to Maximillion's wristwatch.

Accommodations: Cross through the outermost part of the lab (a 'reception area' of sorts), and climb the stairs, and it's like a miniature, windowless penthouse suite. When Maximillion downsized to move into the Mansion, he spent a lot of the leftover money on furniture, remodeling and whatnot, to turn the former Anti-War Bunker (abandoned for years) into an epic Living Space.

Living Quarters
(Up a small flight of stairs from the Lab)

The only way to enter is to know the way, and to either request entry via a secured Intercom leading into the Main Reception Area, or possess the necessary (unknown) credentials Maximillion has, that lets him pass freely into, and out of, his Quarters.